add proxy server support

src/lwjgl/java/net/lax1dude/eaglercraft/WebsocketNetworkManager.java

@@ -1,10 +1,16 @@
 package net.lax1dude.eaglercraft;
 
 import java.io.*;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.net.URLConnection;
 import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
 import java.util.LinkedList;
 
 import java.security.Key;
+import java.util.regex.Pattern;
+
 import net.minecraft.client.Minecraft;
 import net.minecraft.src.*;
 import me.ayunami2000.ayuncraft.CryptManager;
@@ -24,12 +30,58 @@ public class WebsocketNetworkManager implements INetworkManager {
 
 	private NetHandler netHandler;
 
+	Pattern ipPattern = Pattern.compile("^"
+			+ "(((?!-)[A-Za-z0-9-]{1,63}(?<!-)\\.)+[A-Za-z]{2,6}" // Domain name
+			+ "|"
+			+ "localhost" // localhost
+			+ "|"
+			+ "(([0-9]{1,3}\\.){3})[0-9]{1,3})" // Ip
+			+ "(:"
+			+ "[0-9]{1,5})?$"); // Port
+
 	public WebsocketNetworkManager(String uri, String eagler, NetHandler netHandler) throws IOException {
 		this.netHandler = netHandler;
 		this.sharedKeyForEncryption = null;
 		this.isInputBeingDecrypted = false;
 		this.isOutputEncrypted = false;
-		if(!EaglerAdapter.startConnection(uri)) {
+		String proxyUrl=Minecraft.getMinecraft().gameSettings.proxy;
+		boolean stillConnect=true;
+		if(!proxyUrl.equals("")){
+			stillConnect=false;
+			if(uri.startsWith("ws://"))uri=uri.substring(5);
+			if(uri.startsWith("wss://"))uri=uri.substring(6);
+			if(uri.contains("/"))uri=uri.split("/",2)[0];
+			if (ipPattern.matcher(proxyUrl).matches()&&ipPattern.matcher(uri).matches()) {
+				String ip = uri;
+				String port = "25565";
+				if (uri.contains(":")) {
+					String[] ipPort = uri.split(":", 2);
+					ip = ipPort[0];
+					port = ipPort[1];
+				}
+				//send initial request (lag client)
+				URL url = new URL("http"+(EaglerAdapter.isSSLPage()?"s":"")+"://"+proxyUrl+"/api/vm/net/connect");
+				URLConnection con = url.openConnection();
+				HttpURLConnection http = (HttpURLConnection)con;
+				http.setRequestMethod("POST");
+				http.setDoOutput(true);
+				byte[] out = ("{\"port\":\""+port+"\",\"host\":\""+ip+"\"}").getBytes(StandardCharsets.UTF_8);
+				http.setFixedLengthStreamingMode(out.length);
+				http.setRequestProperty("Content-Type","application/json; charset=UTF-8");
+				http.connect();
+				http.getOutputStream().write(out);
+				Reader in = new BufferedReader(new InputStreamReader(http.getInputStream(), "UTF-8"));
+				StringBuilder sb = new StringBuilder();
+				for (int c; (c = in.read()) >= 0;)
+					sb.append((char)c);
+				String response = sb.toString();
+				response=response.substring(10);
+				response=response.split("\"",2)[0];
+				uri="ws"+(EaglerAdapter.isSSLPage()?"s":"")+"://"+proxyUrl+"/api/vm/net/socket?token="+response;
+				stillConnect=true;
+			}
+		}
+		if(!stillConnect||!EaglerAdapter.startConnection(uri)) {
 			throw new IOException("websocket to "+uri+" failed");
 		}
 		EaglerAdapter.setDebugVar("minecraftServer", uri);

src/main/java/net/lax1dude/eaglercraft/GuiScreenEditProfile.java

@@ -10,6 +10,7 @@ public class GuiScreenEditProfile extends GuiScreen {
 	
 	private GuiScreen parent;
 	private GuiTextField username;
+	private GuiTextField proxy;
 	
 	private boolean dropDownOpen = false;
 	private String[] dropDownOptions;
@@ -76,6 +77,8 @@ public class GuiScreenEditProfile extends GuiScreen {
 		this.username = new GuiTextField(this.fontRenderer, this.width / 2 - 20 + 1, this.height / 6 + 24 + 1, 138, 20);
 		this.username.setFocused(true);
 		this.username.setText(EaglerProfile.username);
+		this.proxy = new GuiTextField(this.fontRenderer, this.width / 2 - 20 + 1, this.height / 6 + 1, 138, 20);
+		this.proxy.setText(this.mc.gameSettings.proxy);
 		selectedSlot = EaglerProfile.presetSkinId == -1 ? EaglerProfile.customSkinId : (EaglerProfile.presetSkinId + EaglerProfile.skinNames.size());
 		//this.buttonList.add(new GuiButton(0, this.width / 2 - 100, 140, "eeeee"));
 		this.buttonList.add(button0 = new GuiButton(200, this.width / 2 - 100, this.height / 6 + 168, var1.translateKey("gui.done")));
@@ -105,6 +108,7 @@ public class GuiScreenEditProfile extends GuiScreen {
 		drawRect(skinX + 1, skinY + 1, skinX + skinWidth - 1, skinY + skinHeight - 1, 0xff000015);
 
 		this.username.drawTextBox();
+		this.proxy.drawTextBox();
 		if(dropDownOpen) {
 			super.drawScreen(0, 0, par3);
 		}else {
@@ -184,6 +188,7 @@ public class GuiScreenEditProfile extends GuiScreen {
 		if(!dropDownOpen) {
 			if(par1GuiButton.id == 200) {
 				EaglerProfile.username = this.username.getText().length() == 0 ? "null" : this.username.getText();
+				this.mc.gameSettings.proxy=proxy.getText();
 				EaglerProfile.presetSkinId = selectedSlot - EaglerProfile.skinNames.size();
 				if(EaglerProfile.presetSkinId < 0) {
 					EaglerProfile.presetSkinId = -1;
@@ -226,6 +231,7 @@ public class GuiScreenEditProfile extends GuiScreen {
 	
 	public void updateScreen() {
 		this.username.updateCursorCounter();
+		this.proxy.updateCursorCounter();
 		
 		if(dropDownOpen) {
 			if(EaglerAdapter.mouseIsButtonDown(0)) {
@@ -274,6 +280,7 @@ public class GuiScreenEditProfile extends GuiScreen {
 	
 	protected void keyTyped(char par1, int par2) {
 		this.username.textboxKeyTyped(par1, par2);
+		this.proxy.textboxKeyTyped(par1, par2);
 
 		String text = username.getText();
 		if(text.length() > 16) text = text.substring(0, 16);
@@ -293,6 +300,7 @@ public class GuiScreenEditProfile extends GuiScreen {
 	protected void mouseClicked(int par1, int par2, int par3) {
 		super.mouseClicked(par1, par2, par3);
 		this.username.mouseClicked(par1, par2, par3);
+		this.proxy.mouseClicked(par1, par2, par3);
 		
 		if (par3 == 0) {
 			int skinX = this.width / 2 + 140 - 40;
@@ -330,7 +338,4 @@ public class GuiScreenEditProfile extends GuiScreen {
 			
 		}
 	}
-	
-	
-	
 }

src/main/java/net/minecraft/src/GameSettings.java

@@ -6,6 +6,7 @@ import net.minecraft.client.Minecraft;
 
 public class GameSettings {
 	public static boolean useDefaultProtocol = false;
+	public static String proxy = "pproxy.rom1504.fr";
 
 
 	private static final String[] RENDER_DISTANCES = new String[] { "options.renderDistance.far", "options.renderDistance.normal", "options.renderDistance.short", "options.renderDistance.tiny" };

src/teavm/java/net/lax1dude/eaglercraft/WebsocketNetworkManager.java

@@ -1,8 +1,13 @@
 package net.lax1dude.eaglercraft;
 
 import java.io.*;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.net.URLConnection;
 import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
 import java.util.LinkedList;
+import java.util.regex.Pattern;
 
 import me.ayunami2000.ayuncraft.java.security.Key;
 import net.minecraft.client.Minecraft;
@@ -11,6 +16,8 @@ import me.ayunami2000.ayuncraft.CryptManager;
 import org.bouncycastle.crypto.BufferedBlockCipher;
 
 import me.ayunami2000.ayuncraft.javax.crypto.SecretKey;
+import org.teavm.jso.JSBody;
+import org.teavm.jso.json.JSON;
 
 public class WebsocketNetworkManager implements INetworkManager {
 	private boolean isInputBeingDecrypted;
@@ -24,12 +31,58 @@ public class WebsocketNetworkManager implements INetworkManager {
 
 	private NetHandler netHandler;
 
+	Pattern ipPattern = Pattern.compile("^"
+			+ "(((?!-)[A-Za-z0-9-]{1,63}(?<!-)\\.)+[A-Za-z]{2,6}" // Domain name
+			+ "|"
+			+ "localhost" // localhost
+			+ "|"
+			+ "(([0-9]{1,3}\\.){3})[0-9]{1,3})" // Ip
+			+ "(:"
+			+ "[0-9]{1,5})?$"); // Port
+
 	public WebsocketNetworkManager(String uri, String eagler, NetHandler netHandler) throws IOException {
 		this.netHandler = netHandler;
 		this.sharedKeyForEncryption = null;
 		this.isInputBeingDecrypted = false;
 		this.isOutputEncrypted = false;
-		if(!EaglerAdapter.startConnection(uri)) {
+		String proxyUrl=Minecraft.getMinecraft().gameSettings.proxy;
+		boolean stillConnect=true;
+		if(!proxyUrl.equals("")){
+			stillConnect=false;
+			if(uri.startsWith("ws://"))uri=uri.substring(5);
+			if(uri.startsWith("wss://"))uri=uri.substring(6);
+			if(uri.contains("/"))uri=uri.split("/",2)[0];
+			if (ipPattern.matcher(proxyUrl).matches()&&ipPattern.matcher(uri).matches()) {
+				String ip = uri;
+				String port = "25565";
+				if (uri.contains(":")) {
+					String[] ipPort = uri.split(":", 2);
+					ip = ipPort[0];
+					port = ipPort[1];
+				}
+				//send initial request (lag client)
+				URL url = new URL("http"+(EaglerAdapter.isSSLPage()?"s":"")+"://"+proxyUrl+"/api/vm/net/connect");
+				URLConnection con = url.openConnection();
+				HttpURLConnection http = (HttpURLConnection)con;
+				http.setRequestMethod("POST");
+				http.setDoOutput(true);
+				byte[] out = ("{\"port\":\""+port+"\",\"host\":\""+ip+"\"}").getBytes(StandardCharsets.UTF_8);
+				http.setFixedLengthStreamingMode(out.length);
+				http.setRequestProperty("Content-Type","application/json; charset=UTF-8");
+				http.connect();
+				http.getOutputStream().write(out);
+				Reader in = new BufferedReader(new InputStreamReader(http.getInputStream(), "UTF-8"));
+				StringBuilder sb = new StringBuilder();
+				for (int c; (c = in.read()) >= 0;)
+					sb.append((char)c);
+				String response = sb.toString();
+				response=response.substring(10);
+				response=response.split("\"",2)[0];
+				uri="ws"+(EaglerAdapter.isSSLPage()?"s":"")+"://"+proxyUrl+"/api/vm/net/socket?token="+response;
+				stillConnect=true;
+			}
+		}
+		if(!stillConnect||!EaglerAdapter.startConnection(uri)) {
 			throw new IOException("websocket to "+uri+" failed");
 		}
 		EaglerAdapter.setDebugVar("minecraftServer", uri);