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package kr.syeyoung.dungeonsguide;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.mojang.authlib.GameProfile;
import com.mojang.authlib.exceptions.AuthenticationException;
import com.mojang.authlib.minecraft.MinecraftSessionService;
import lombok.Getter;
import net.minecraft.client.Minecraft;
import net.minecraft.util.Session;
import org.apache.commons.codec.binary.Base64;
import javax.crypto.*;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import javax.xml.bind.DatatypeConverter;
import java.io.*;
import java.math.BigInteger;
import java.net.*;
import java.security.*;
import java.util.HashMap;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
public class b {
private KeyPair a;
private String b;
public String c() {
return b;
}
private KeyPair a() {
KeyPairGenerator a = null;
try {
a = KeyPairGenerator.getInstance("RSA");
} catch (NoSuchAlgorithmException b) { }
a.initialize(1024);
this.a = a.generateKeyPair();
return this.a;
}
public b() {
a();
}
public String b() throws IOException, AuthenticationException, NoSuchAlgorithmException, IllegalBlockSizeException, InvalidKeyException, BadPaddingException, InvalidAlgorithmParameterException, NoSuchPaddingException {
Session a = Minecraft.getMinecraft().getSession();
String b = a.getToken();
String c = a(a.getProfile());
MinecraftSessionService yggdrasilMinecraftSessionService = Minecraft.getMinecraft().getSessionService();
JsonObject d = a(c);
String hash = a(Base64.decodeBase64(d.get("sharedSecret").getAsString()),
Base64.decodeBase64(d.get("publicKey").getAsString()));
yggdrasilMinecraftSessionService.joinServer(a.getProfile(), b, hash);
this.b = a(c, this.a.getPublic());
b(this.b);
return this.b;
}
public JsonObject a(String c) {
String a = c.split("\\.")[1].replace("+", "-").replace("/", "_");
String b = new String(Base64.decodeBase64(a)); // padding
return (JsonObject) new JsonParser().parse(b);
}
private String a(GameProfile d) throws IOException {
HttpURLConnection a = (HttpURLConnection) new URL("https://dungeonsguide.kro.kr/auth/requestAuth").openConnection();
a.setRequestProperty("User-Agent", "DungeonsGuide/1.0");
a.setRequestProperty("Content-Type", "application/json");
a.setRequestMethod("POST");
a.setDoInput(true);
a.setDoOutput(true);
a.getOutputStream().write(("{\"uuid\":\""+d.getId().toString()+"\",\"nickname\":\""+d.getName()+"\"}").getBytes());
InputStreamReader b = new InputStreamReader(a.getInputStream());
JsonObject c = (JsonObject) new JsonParser().parse(b);
if (!"ok".equals(c.get("status").getAsString())) {
return null;
}
return c.get("data").getAsString();
}
private String a(String a, PublicKey b) throws IOException {
HttpURLConnection c = (HttpURLConnection) new URL("https://dungeonsguide.kro.kr/auth/authenticate").openConnection();
c.setRequestMethod("POST");
c.setRequestProperty("User-Agent", "DungeonsGuide/1.0");
c.setRequestProperty("Content-Type", "application/json");
c.setDoInput(true);
c.setDoOutput(true);
c.getOutputStream().write(("{\"jwt\":\""+a+"\",\"publicKey\":\""+Base64.encodeBase64URLSafeString(b.getEncoded())+"\"}").getBytes());
InputStreamReader d = new InputStreamReader(c.getInputStream());
JsonObject e = (JsonObject) new JsonParser().parse(d);
if (!"ok".equals(e.get("status").getAsString())) {
return null;
}
return e.get("data").getAsString();
}
private HashMap<String, byte[]> c = new HashMap<String, byte[]>();
public HashMap<String, byte[]> d() {
return c;
}
private void b(String a) throws IOException, NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException, InvalidAlgorithmParameterException {
HttpURLConnection b = (HttpURLConnection) new URL("https://dungeonsguide.kro.kr/resource/jar").openConnection();
b.setRequestProperty("User-Agent", "DungeonsGuide/1.0");
b.setRequestProperty("Content-Type", "application/json");
b.setRequestMethod("GET");
b.setRequestProperty("Authorization", a);
b.setDoInput(true);
b.setDoOutput(true);
InputStream c = b.getInputStream();
byte[] d = new byte[4];
c.read(d);
int f = ((d[0] & 0xFF) << 24) |
((d[1] & 0xFF) << 16) |
((d[2] & 0xFF) << 8) |
((d[3] & 0xFF));
while (c.available() < f) ;
byte[] e = new byte[f];
c.read(e);
Cipher g = Cipher.getInstance("RSA/ECB/PKCS1Padding");
g.init(Cipher.DECRYPT_MODE, this.a.getPrivate());
byte[] h = g.doFinal(e);
g = Cipher.getInstance("AES/CBC/PKCS5Padding");
SecretKeySpec i = new SecretKeySpec(h, "AES");
IvParameterSpec j = new IvParameterSpec(h);
g.init(Cipher.DECRYPT_MODE, i, j);
CipherInputStream k = new CipherInputStream(c, g);
k.read(d);
ZipInputStream l = new ZipInputStream(k);
ZipEntry m;
while ((m=l.getNextEntry()) != null) {
byte[] n = new byte[256];
ByteArrayOutputStream o = new ByteArrayOutputStream();
int p = 0;
while((p = l.read(n)) > 0) {
o.write(n, 0, p);
}
this.c.put(m.getName(), o.toByteArray());
}
b.disconnect();
}
public String a(byte[] a, byte[] b) throws NoSuchAlgorithmException {
MessageDigest c = MessageDigest.getInstance("SHA-1");
c.update("".getBytes());
c.update(a);
c.update(b);
byte[] d = c.digest();
return new BigInteger(d).toString(16);
}
}
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