If an empty body or error response is received, the client would attempt to use a null code base and initial jar, which immediately failed
347 lines
10 KiB
Java
347 lines
10 KiB
Java
/*
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* Copyright (c) 2016-2017, Adam <Adam@sigterm.info>
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* Copyright (c) 2018, Tomas Slusny <slusnucky@gmail.com>
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* Copyright (c) 2018 Abex
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package net.runelite.client.rs;
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import com.google.common.base.Strings;
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import com.google.common.hash.Hashing;
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import com.google.common.io.ByteStreams;
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import com.google.common.reflect.TypeToken;
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import com.google.gson.Gson;
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import io.sigpipe.jbsdiff.InvalidHeaderException;
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import io.sigpipe.jbsdiff.Patch;
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import java.applet.Applet;
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import java.io.ByteArrayOutputStream;
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import java.io.FilterInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.security.cert.Certificate;
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import java.security.cert.CertificateException;
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import java.security.cert.CertificateFactory;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.function.Supplier;
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import java.util.jar.JarEntry;
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import java.util.jar.JarInputStream;
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import javax.swing.SwingUtilities;
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import lombok.extern.slf4j.Slf4j;
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import net.runelite.api.Client;
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import static net.runelite.client.rs.ClientUpdateCheckMode.AUTO;
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import static net.runelite.client.rs.ClientUpdateCheckMode.NONE;
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import static net.runelite.client.rs.ClientUpdateCheckMode.VANILLA;
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import net.runelite.client.ui.FatalErrorDialog;
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import net.runelite.client.ui.SplashScreen;
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import net.runelite.http.api.RuneLiteAPI;
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import okhttp3.HttpUrl;
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import okhttp3.Request;
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import okhttp3.Response;
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import org.apache.commons.compress.compressors.CompressorException;
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@Slf4j
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public class ClientLoader implements Supplier<Applet>
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{
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private static final int NUM_ATTEMPTS = 6;
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private ClientUpdateCheckMode updateCheckMode;
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private Object client = null;
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public ClientLoader(ClientUpdateCheckMode updateCheckMode)
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{
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this.updateCheckMode = updateCheckMode;
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}
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@Override
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public synchronized Applet get()
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{
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if (client == null)
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{
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client = doLoad();
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}
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if (client instanceof Throwable)
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{
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throw new RuntimeException((Throwable) client);
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}
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return (Applet) client;
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}
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private Object doLoad()
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{
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if (updateCheckMode == NONE)
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{
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return null;
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}
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try
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{
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SplashScreen.stage(0, null, "Fetching applet viewer config");
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HostSupplier hostSupplier = new HostSupplier();
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String host = null;
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RSConfig config;
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for (int attempt = 0; ; attempt++)
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{
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try
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{
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config = ClientConfigLoader.fetch(host);
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if (Strings.isNullOrEmpty(config.getCodeBase()) || Strings.isNullOrEmpty(config.getInitialJar()) || Strings.isNullOrEmpty(config.getInitialClass()))
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{
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throw new IOException("Invalid or missing jav_config");
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}
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break;
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}
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catch (IOException e)
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{
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log.info("Failed to get jav_config from host \"{}\" ({})", host, e.getMessage());
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if (attempt >= NUM_ATTEMPTS)
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{
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throw e;
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}
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host = hostSupplier.get();
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}
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}
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Map<String, byte[]> zipFile = new HashMap<>();
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{
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Certificate[] jagexCertificateChain = getJagexCertificateChain();
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String codebase = config.getCodeBase();
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String initialJar = config.getInitialJar();
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HttpUrl url = HttpUrl.parse(codebase + initialJar);
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for (int attempt = 0; ; attempt++)
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{
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zipFile.clear();
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Request request = new Request.Builder()
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.url(url)
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.build();
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try (Response response = RuneLiteAPI.CLIENT.newCall(request).execute())
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{
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int length = (int) response.body().contentLength();
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if (length < 0)
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{
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length = 3 * 1024 * 1024;
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}
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final int flength = length;
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InputStream istream = new FilterInputStream(response.body().byteStream())
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{
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private int read = 0;
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@Override
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public int read(byte[] b, int off, int len) throws IOException
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{
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int thisRead = super.read(b, off, len);
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this.read += thisRead;
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SplashScreen.stage(.05, .35, null, "Downloading Old School RuneScape", this.read, flength, true);
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return thisRead;
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}
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};
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JarInputStream jis = new JarInputStream(istream);
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byte[] tmp = new byte[4096];
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ByteArrayOutputStream buffer = new ByteArrayOutputStream(756 * 1024);
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for (; ; )
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{
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JarEntry metadata = jis.getNextJarEntry();
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if (metadata == null)
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{
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break;
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}
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buffer.reset();
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for (; ; )
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{
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int n = jis.read(tmp);
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if (n <= -1)
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{
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break;
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}
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buffer.write(tmp, 0, n);
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}
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if (!Arrays.equals(metadata.getCertificates(), jagexCertificateChain))
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{
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if (metadata.getName().startsWith("META-INF/"))
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{
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// META-INF/JAGEXLTD.SF and META-INF/JAGEXLTD.RSA are not signed, but we don't need
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// anything in META-INF anyway.
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continue;
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}
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else
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{
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throw new VerificationException("Unable to verify jar entry: " + metadata.getName());
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}
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}
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zipFile.put(metadata.getName(), buffer.toByteArray());
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}
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break;
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}
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catch (IOException e)
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{
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log.info("Failed to download gamepack from \"{}\" ({})", url, e.getMessage());
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if (attempt >= NUM_ATTEMPTS)
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{
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throw e;
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}
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url = url.newBuilder().host(hostSupplier.get()).build();
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}
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}
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}
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if (updateCheckMode == AUTO)
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{
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SplashScreen.stage(.35, null, "Patching");
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Map<String, String> hashes;
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try (InputStream is = ClientLoader.class.getResourceAsStream("/patch/hashes.json"))
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{
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if (is == null)
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{
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SwingUtilities.invokeLater(() ->
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new FatalErrorDialog("The client-patch is missing from the classpath. If you are building " +
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"the client you need to re-run maven")
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.addBuildingGuide()
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.open());
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throw new NullPointerException();
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}
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hashes = new Gson().fromJson(new InputStreamReader(is), new TypeToken<HashMap<String, String>>()
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{
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}.getType());
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}
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for (Map.Entry<String, String> file : hashes.entrySet())
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{
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byte[] bytes = zipFile.get(file.getKey());
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String ourHash = null;
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if (bytes != null)
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{
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ourHash = Hashing.sha512().hashBytes(bytes).toString();
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}
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if (!file.getValue().equals(ourHash))
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{
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log.debug("{} had a hash mismatch; falling back to vanilla. {} != {}", file.getKey(), file.getValue(), ourHash);
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log.info("Client is outdated!");
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updateCheckMode = VANILLA;
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break;
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}
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}
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}
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if (updateCheckMode == AUTO)
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{
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ByteArrayOutputStream patchOs = new ByteArrayOutputStream(756 * 1024);
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int patchCount = 0;
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for (Map.Entry<String, byte[]> file : zipFile.entrySet())
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{
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byte[] bytes;
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try (InputStream is = ClientLoader.class.getResourceAsStream("/patch/" + file.getKey() + ".bs"))
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{
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if (is == null)
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{
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continue;
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}
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bytes = ByteStreams.toByteArray(is);
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}
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patchOs.reset();
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Patch.patch(file.getValue(), bytes, patchOs);
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file.setValue(patchOs.toByteArray());
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++patchCount;
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SplashScreen.stage(.38, .45, null, "Patching", patchCount, zipFile.size(), false);
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}
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log.debug("Patched {} classes", patchCount);
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}
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SplashScreen.stage(.465, "Starting", "Starting Old School RuneScape");
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String initialClass = config.getInitialClass();
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ClassLoader rsClassLoader = new ClassLoader(ClientLoader.class.getClassLoader())
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{
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@Override
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protected Class<?> findClass(String name) throws ClassNotFoundException
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{
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String path = name.replace('.', '/').concat(".class");
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byte[] data = zipFile.get(path);
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if (data == null)
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{
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throw new ClassNotFoundException(name);
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}
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return defineClass(name, data, 0, data.length);
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}
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};
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Class<?> clientClass = rsClassLoader.loadClass(initialClass);
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Applet rs = (Applet) clientClass.newInstance();
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rs.setStub(new RSAppletStub(config));
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if (rs instanceof Client)
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{
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log.info("client-patch {}", ((Client) rs).getBuildID());
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}
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SplashScreen.stage(.5, null, "Starting core classes");
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return rs;
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}
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catch (IOException | ClassNotFoundException | InstantiationException | IllegalAccessException
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| CompressorException | InvalidHeaderException | CertificateException | VerificationException
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| SecurityException e)
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{
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log.error("Error loading RS!", e);
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SwingUtilities.invokeLater(() -> FatalErrorDialog.showNetErrorWindow("loading the client", e));
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return e;
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}
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}
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private static Certificate[] getJagexCertificateChain() throws CertificateException
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{
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CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
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Collection<? extends Certificate> certificates = certificateFactory.generateCertificates(ClientLoader.class.getResourceAsStream("jagex.crt"));
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return certificates.toArray(new Certificate[certificates.size()]);
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}
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}
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