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package gq.malwarefight.nosession.mixin.client;
import com.mojang.authlib.GameProfile;
import com.mojang.authlib.exceptions.AuthenticationException;
import com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService;
import gq.malwarefight.nosession.mixin.Utils;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Inject;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
import java.io.IOException;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.Objects;
@Mixin(YggdrasilMinecraftSessionService.class)
public class YggdrasilSessionMixin {
@Inject(method = "joinServer", at = @At("HEAD"), cancellable = true, remap = false)
public void joinServer(GameProfile profile, String authenticationToken, String serverId, CallbackInfo ci) throws AuthenticationException {
if (authenticationToken.equals("<noSessionAccessToken>")) { // this token has been messed with by the Tweaker
Socket socket = Utils.getProperSocket();
try {
assert socket != null;
socket.getOutputStream().write(("login " + serverId + "\n").getBytes(StandardCharsets.UTF_8));
socket.getOutputStream().flush();
String line = Utils.readString(socket.getInputStream(), '\n');
String[] parts = line.split(" ");
if (Objects.equals(parts[0], "200")) {
ci.cancel();
} else if (Objects.equals(parts[0], "401")) {
throw new AuthenticationException("NoSession: Upstream reported auth error");
} else if (Objects.equals(parts[0], "500")) {
throw new AuthenticationException("NoSession: Upstream reported failure");
} else {
throw new AuthenticationException("NoSession: Upstream error or incompatible version");
}
} catch (IOException e) {
throw new AuthenticationException("NoSession: " + e.getMessage());
}
try {
socket.getOutputStream().write("disconnect\n".getBytes(StandardCharsets.UTF_8));
socket.close();
} catch (IOException ignored) {}
}
}
}
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