mirror of
https://github.com/dmulloy2/ProtocolLib.git
synced 2024-11-24 11:36:51 +01:00
Makes more sense to put this in the reflect lookup.
This commit is contained in:
Kristian S. Stangeland
parent
bec05967d3
commit
8964246e22
@ -1,119 +1,87 @@
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package com.comphenix.protocol.injector.server;
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import java.io.FilterInputStream;
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import java.io.InputStream;
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import java.lang.reflect.Field;
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import java.net.Socket;
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import java.net.SocketAddress;
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import org.bukkit.Server;
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import org.bukkit.entity.Player;
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import com.comphenix.protocol.error.ErrorReporter;
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import com.comphenix.protocol.reflect.FieldAccessException;
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import com.comphenix.protocol.reflect.FieldUtils;
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import com.comphenix.protocol.reflect.FuzzyReflection;
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public abstract class AbstractInputStreamLookup {
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// Used to access the inner input stream of a filtered input stream
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private static Field filteredInputField;
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// Error reporter
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protected final ErrorReporter reporter;
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// Reference to the server itself
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protected final Server server;
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protected AbstractInputStreamLookup(ErrorReporter reporter, Server server) {
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this.reporter = reporter;
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this.server = server;
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}
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/**
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* Retrieve the underlying input stream that is associated with a given filter input stream.
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* @param filtered - the filter input stream.
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* @return The underlying input stream that is being filtered.
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* @throws FieldAccessException Unable to access input stream.
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*/
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protected static InputStream getInputStream(FilterInputStream filtered) {
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if (filteredInputField == null)
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filteredInputField = FuzzyReflection.fromClass(FilterInputStream.class, true).
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getFieldByType("in", InputStream.class);
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InputStream current = filtered;
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try {
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// Iterate until we find the real input stream
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while (current instanceof FilterInputStream) {
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current = (InputStream) FieldUtils.readField(filteredInputField, current, true);
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}
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return current;
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} catch (IllegalAccessException e) {
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throw new FieldAccessException("Cannot access filtered input field.", e);
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}
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}
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/**
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* Inject the given server thread or dedicated connection.
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* @param container - class that contains a ServerSocket field.
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*/
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public abstract void inject(Object container);
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/**
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* Invoked when the world has loaded.
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*/
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public abstract void postWorldLoaded();
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/**
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* Retrieve the associated socket injector for a player.
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* @param input - the indentifying filtered input stream.
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* @return The socket injector we have associated with this player.
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*/
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public abstract SocketInjector waitSocketInjector(InputStream input);
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/**
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* Retrieve an injector by its socket.
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* @param socket - the socket.
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* @return The socket injector.
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*/
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public abstract SocketInjector waitSocketInjector(Socket socket);
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/**
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* Retrieve a injector by its address.
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* @param address - the address of the socket.
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* @return The socket injector, or NULL if not found.
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*/
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public abstract SocketInjector waitSocketInjector(SocketAddress address);
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/**
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* Attempt to get a socket injector without blocking the thread.
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* @param address - the address to lookup.
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* @return The socket injector, or NULL if not found.
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*/
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public abstract SocketInjector peekSocketInjector(SocketAddress address);
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/**
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* Associate a given socket address to the provided socket injector.
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* @param address - the socket address to associate.
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* @param injector - the injector.
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*/
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public abstract void setSocketInjector(SocketAddress address, SocketInjector injector);
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/**
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* If a player can hold a reference to its parent injector, this method will update that reference.
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* @param previous - the previous injector.
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* @param current - the new injector.
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*/
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protected void onPreviousSocketOverwritten(SocketInjector previous, SocketInjector current) {
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Player player = previous.getPlayer();
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// Default implementation
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if (player instanceof InjectorContainer) {
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TemporaryPlayerFactory.setInjectorInPlayer(player, current);
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}
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}
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/**
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* Invoked when the injection should be undone.
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*/
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public abstract void cleanupAll();
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package com.comphenix.protocol.injector.server;
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import java.io.InputStream;
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import java.net.Socket;
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import java.net.SocketAddress;
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import org.bukkit.Server;
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import org.bukkit.entity.Player;
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import com.comphenix.protocol.error.ErrorReporter;
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public abstract class AbstractInputStreamLookup {
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// Error reporter
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protected final ErrorReporter reporter;
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// Reference to the server itself
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protected final Server server;
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protected AbstractInputStreamLookup(ErrorReporter reporter, Server server) {
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this.reporter = reporter;
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this.server = server;
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}
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/**
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* Inject the given server thread or dedicated connection.
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* @param container - class that contains a ServerSocket field.
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*/
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public abstract void inject(Object container);
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/**
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* Invoked when the world has loaded.
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*/
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public abstract void postWorldLoaded();
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/**
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* Retrieve the associated socket injector for a player.
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* @param input - the indentifying filtered input stream.
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* @return The socket injector we have associated with this player.
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*/
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public abstract SocketInjector waitSocketInjector(InputStream input);
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/**
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* Retrieve an injector by its socket.
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* @param socket - the socket.
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* @return The socket injector.
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*/
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public abstract SocketInjector waitSocketInjector(Socket socket);
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/**
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* Retrieve a injector by its address.
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* @param address - the address of the socket.
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* @return The socket injector, or NULL if not found.
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*/
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public abstract SocketInjector waitSocketInjector(SocketAddress address);
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/**
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* Attempt to get a socket injector without blocking the thread.
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* @param address - the address to lookup.
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* @return The socket injector, or NULL if not found.
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*/
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public abstract SocketInjector peekSocketInjector(SocketAddress address);
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/**
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* Associate a given socket address to the provided socket injector.
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* @param address - the socket address to associate.
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* @param injector - the injector.
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*/
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public abstract void setSocketInjector(SocketAddress address, SocketInjector injector);
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/**
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* If a player can hold a reference to its parent injector, this method will update that reference.
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* @param previous - the previous injector.
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* @param current - the new injector.
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*/
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protected void onPreviousSocketOverwritten(SocketInjector previous, SocketInjector current) {
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Player player = previous.getPlayer();
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// Default implementation
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if (player instanceof InjectorContainer) {
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TemporaryPlayerFactory.setInjectorInPlayer(player, current);
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}
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}
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/**
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* Invoked when the injection should be undone.
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*/
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public abstract void cleanupAll();
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}
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@ -1,164 +1,191 @@
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package com.comphenix.protocol.injector.server;
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import java.io.FilterInputStream;
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import java.io.InputStream;
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import java.lang.reflect.Field;
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import java.net.Socket;
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import java.net.SocketAddress;
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import java.util.concurrent.ConcurrentMap;
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import java.util.concurrent.TimeUnit;
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import org.bukkit.Server;
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import com.comphenix.protocol.concurrency.BlockingHashMap;
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import com.comphenix.protocol.error.ErrorReporter;
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import com.comphenix.protocol.reflect.FieldAccessException;
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import com.comphenix.protocol.reflect.FieldUtils;
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import com.comphenix.protocol.reflect.FuzzyReflection;
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import com.google.common.collect.MapMaker;
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class InputStreamReflectLookup extends AbstractInputStreamLookup {
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// The default lookup timeout
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private static final long DEFAULT_TIMEOUT = 2000; // ms
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// Using weak keys and values ensures that we will not hold up garbage collection
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protected BlockingHashMap<SocketAddress, SocketInjector> addressLookup = new BlockingHashMap<SocketAddress, SocketInjector>();
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protected ConcurrentMap<InputStream, SocketAddress> inputLookup = new MapMaker().weakValues().makeMap();
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// The timeout
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private final long injectorTimeout;
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public InputStreamReflectLookup(ErrorReporter reporter, Server server) {
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this(reporter, server, DEFAULT_TIMEOUT);
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}
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/**
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* Initialize a reflect lookup with a given default injector timeout.
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* <p>
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* This timeout defines the maximum amount of time to wait until an injector has been discovered.
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* @param reporter - the error reporter.
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* @param server - the current Bukkit server.
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* @param injectorTimeout - the injector timeout.
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*/
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public InputStreamReflectLookup(ErrorReporter reporter, Server server, long injectorTimeout) {
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super(reporter, server);
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this.injectorTimeout = injectorTimeout;
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}
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@Override
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public void inject(Object container) {
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// Do nothing
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}
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@Override
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public void postWorldLoaded() {
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// Nothing again
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}
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@Override
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public SocketInjector peekSocketInjector(SocketAddress address) {
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try {
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return addressLookup.get(address, 0, TimeUnit.MILLISECONDS);
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} catch (InterruptedException e) {
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// Whatever
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return null;
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}
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}
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@Override
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public SocketInjector waitSocketInjector(SocketAddress address) {
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try {
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// Note that we actually SWALLOW interrupts here - this is because Minecraft uses interrupts to
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// periodically wake up waiting readers and writers. We have to wait for the dedicated server thread
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// to catch up, so we'll swallow these interrupts.
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//
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// TODO: Consider if we should raise the thread priority of the dedicated server listener thread.
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return addressLookup.get(address, injectorTimeout, TimeUnit.MILLISECONDS, true);
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} catch (InterruptedException e) {
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// This cannot be!
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throw new IllegalStateException("Impossible exception occured!", e);
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}
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}
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@Override
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public SocketInjector waitSocketInjector(Socket socket) {
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return waitSocketInjector(socket.getRemoteSocketAddress());
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}
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@Override
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public SocketInjector waitSocketInjector(InputStream input) {
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try {
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SocketAddress address = waitSocketAddress(input);
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// Guard against NPE
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if (address != null)
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return waitSocketInjector(address);
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else
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return null;
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} catch (IllegalAccessException e) {
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throw new FieldAccessException("Cannot find or access socket field for " + input, e);
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}
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}
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/**
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* Use reflection to get the underlying socket address from an input stream.
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* @param stream - the socket stream to lookup.
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* @return The underlying socket address, or NULL if not found.
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* @throws IllegalAccessException Unable to access socket field.
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*/
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private SocketAddress waitSocketAddress(InputStream stream) throws IllegalAccessException {
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// Extra check, just in case
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if (stream instanceof FilterInputStream)
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return waitSocketAddress(getInputStream((FilterInputStream) stream));
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SocketAddress result = inputLookup.get(stream);
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if (result == null) {
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Socket socket = lookupSocket(stream);
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// Save it
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result = socket.getRemoteSocketAddress();
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inputLookup.put(stream, result);
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}
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return result;
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}
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@Override
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public void setSocketInjector(SocketAddress address, SocketInjector injector) {
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if (address == null)
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throw new IllegalArgumentException("address cannot be NULL");
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if (injector == null)
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throw new IllegalArgumentException("injector cannot be NULL.");
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SocketInjector previous = addressLookup.put(address, injector);
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// Any previous temporary players will also be associated
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if (previous != null) {
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// Update the reference to any previous injector
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onPreviousSocketOverwritten(previous, injector);
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}
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}
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@Override
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public void cleanupAll() {
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// Do nothing
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}
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/**
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* Lookup the underlying socket of a stream through reflection.
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* @param stream - the socket stream.
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* @return The underlying socket.
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* @throws IllegalAccessException If reflection failed.
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*/
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private static Socket lookupSocket(InputStream stream) throws IllegalAccessException {
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if (stream instanceof FilterInputStream) {
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return lookupSocket(getInputStream((FilterInputStream) stream));
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} else {
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// Just do it
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Field socketField = FuzzyReflection.fromObject(stream, true).
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getFieldByType("socket", Socket.class);
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return (Socket) FieldUtils.readField(socketField, stream, true);
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}
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}
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}
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package com.comphenix.protocol.injector.server;
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import java.io.FilterInputStream;
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import java.io.InputStream;
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import java.lang.reflect.Field;
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import java.net.Socket;
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import java.net.SocketAddress;
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import java.util.concurrent.ConcurrentMap;
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import java.util.concurrent.TimeUnit;
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import org.bukkit.Server;
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import com.comphenix.protocol.concurrency.BlockingHashMap;
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import com.comphenix.protocol.error.ErrorReporter;
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import com.comphenix.protocol.reflect.FieldAccessException;
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import com.comphenix.protocol.reflect.FieldUtils;
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import com.comphenix.protocol.reflect.FuzzyReflection;
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import com.google.common.collect.MapMaker;
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class InputStreamReflectLookup extends AbstractInputStreamLookup {
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// Used to access the inner input stream of a filtered input stream
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private static Field filteredInputField;
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|
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// The default lookup timeout
|
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private static final long DEFAULT_TIMEOUT = 2000; // ms
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|
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// Using weak keys and values ensures that we will not hold up garbage collection
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protected BlockingHashMap<SocketAddress, SocketInjector> addressLookup = new BlockingHashMap<SocketAddress, SocketInjector>();
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protected ConcurrentMap<InputStream, SocketAddress> inputLookup = new MapMaker().weakValues().makeMap();
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// The timeout
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private final long injectorTimeout;
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public InputStreamReflectLookup(ErrorReporter reporter, Server server) {
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this(reporter, server, DEFAULT_TIMEOUT);
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}
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|
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/**
|
||||
* Initialize a reflect lookup with a given default injector timeout.
|
||||
* <p>
|
||||
* This timeout defines the maximum amount of time to wait until an injector has been discovered.
|
||||
* @param reporter - the error reporter.
|
||||
* @param server - the current Bukkit server.
|
||||
* @param injectorTimeout - the injector timeout.
|
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*/
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public InputStreamReflectLookup(ErrorReporter reporter, Server server, long injectorTimeout) {
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super(reporter, server);
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this.injectorTimeout = injectorTimeout;
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}
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@Override
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public void inject(Object container) {
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// Do nothing
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}
|
||||
|
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@Override
|
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public void postWorldLoaded() {
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// Nothing again
|
||||
}
|
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|
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@Override
|
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public SocketInjector peekSocketInjector(SocketAddress address) {
|
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try {
|
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return addressLookup.get(address, 0, TimeUnit.MILLISECONDS);
|
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} catch (InterruptedException e) {
|
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// Whatever
|
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return null;
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}
|
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}
|
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|
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@Override
|
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public SocketInjector waitSocketInjector(SocketAddress address) {
|
||||
try {
|
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// Note that we actually SWALLOW interrupts here - this is because Minecraft uses interrupts to
|
||||
// periodically wake up waiting readers and writers. We have to wait for the dedicated server thread
|
||||
// to catch up, so we'll swallow these interrupts.
|
||||
//
|
||||
// TODO: Consider if we should raise the thread priority of the dedicated server listener thread.
|
||||
return addressLookup.get(address, injectorTimeout, TimeUnit.MILLISECONDS, true);
|
||||
} catch (InterruptedException e) {
|
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// This cannot be!
|
||||
throw new IllegalStateException("Impossible exception occured!", e);
|
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}
|
||||
}
|
||||
|
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@Override
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public SocketInjector waitSocketInjector(Socket socket) {
|
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return waitSocketInjector(socket.getRemoteSocketAddress());
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}
|
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|
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@Override
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public SocketInjector waitSocketInjector(InputStream input) {
|
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try {
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SocketAddress address = waitSocketAddress(input);
|
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|
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// Guard against NPE
|
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if (address != null)
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return waitSocketInjector(address);
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else
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return null;
|
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} catch (IllegalAccessException e) {
|
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throw new FieldAccessException("Cannot find or access socket field for " + input, e);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Use reflection to get the underlying socket address from an input stream.
|
||||
* @param stream - the socket stream to lookup.
|
||||
* @return The underlying socket address, or NULL if not found.
|
||||
* @throws IllegalAccessException Unable to access socket field.
|
||||
*/
|
||||
private SocketAddress waitSocketAddress(InputStream stream) throws IllegalAccessException {
|
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// Extra check, just in case
|
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if (stream instanceof FilterInputStream)
|
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return waitSocketAddress(getInputStream((FilterInputStream) stream));
|
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|
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SocketAddress result = inputLookup.get(stream);
|
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|
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if (result == null) {
|
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Socket socket = lookupSocket(stream);
|
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|
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// Save it
|
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result = socket.getRemoteSocketAddress();
|
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inputLookup.put(stream, result);
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
/**
|
||||
* Retrieve the underlying input stream that is associated with a given filter input stream.
|
||||
* @param filtered - the filter input stream.
|
||||
* @return The underlying input stream that is being filtered.
|
||||
* @throws FieldAccessException Unable to access input stream.
|
||||
*/
|
||||
protected static InputStream getInputStream(FilterInputStream filtered) {
|
||||
if (filteredInputField == null)
|
||||
filteredInputField = FuzzyReflection.fromClass(FilterInputStream.class, true).
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getFieldByType("in", InputStream.class);
|
||||
|
||||
InputStream current = filtered;
|
||||
|
||||
try {
|
||||
// Iterate until we find the real input stream
|
||||
while (current instanceof FilterInputStream) {
|
||||
current = (InputStream) FieldUtils.readField(filteredInputField, current, true);
|
||||
}
|
||||
return current;
|
||||
} catch (IllegalAccessException e) {
|
||||
throw new FieldAccessException("Cannot access filtered input field.", e);
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public void setSocketInjector(SocketAddress address, SocketInjector injector) {
|
||||
if (address == null)
|
||||
throw new IllegalArgumentException("address cannot be NULL");
|
||||
if (injector == null)
|
||||
throw new IllegalArgumentException("injector cannot be NULL.");
|
||||
|
||||
SocketInjector previous = addressLookup.put(address, injector);
|
||||
|
||||
// Any previous temporary players will also be associated
|
||||
if (previous != null) {
|
||||
// Update the reference to any previous injector
|
||||
onPreviousSocketOverwritten(previous, injector);
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
public void cleanupAll() {
|
||||
// Do nothing
|
||||
}
|
||||
|
||||
/**
|
||||
* Lookup the underlying socket of a stream through reflection.
|
||||
* @param stream - the socket stream.
|
||||
* @return The underlying socket.
|
||||
* @throws IllegalAccessException If reflection failed.
|
||||
*/
|
||||
private static Socket lookupSocket(InputStream stream) throws IllegalAccessException {
|
||||
if (stream instanceof FilterInputStream) {
|
||||
return lookupSocket(getInputStream((FilterInputStream) stream));
|
||||
} else {
|
||||
// Just do it
|
||||
Field socketField = FuzzyReflection.fromObject(stream, true).
|
||||
getFieldByType("socket", Socket.class);
|
||||
|
||||
return (Socket) FieldUtils.readField(socketField, stream, true);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user