Code/net/minecraft/server/players/IpBanList.java

package net.minecraft.server.players;

import com.google.gson.JsonObject;
import java.io.File;
import java.net.SocketAddress;
import javax.annotation.Nullable;

public class IpBanList extends StoredUserList<String, IpBanListEntry> {
    public IpBanList(File p_11036_) {
        super(p_11036_);
    }

    @Override
    protected StoredUserEntry<String> createEntry(JsonObject p_11038_) {
        return new IpBanListEntry(p_11038_);
    }

    public boolean isBanned(SocketAddress p_11042_) {
        String s = this.getIpFromAddress(p_11042_);
        return this.contains(s);
    }

    public boolean isBanned(String p_11040_) {
        return this.contains(p_11040_);
    }

    @Nullable
    public IpBanListEntry get(SocketAddress p_11044_) {
        String s = this.getIpFromAddress(p_11044_);
        return this.get(s);
    }

    private String getIpFromAddress(SocketAddress p_11046_) {
        String s = p_11046_.toString();
        if (s.contains("/")) {
            s = s.substring(s.indexOf(47) + 1);
        }

        if (s.contains(":")) {
            s = s.substring(0, s.indexOf(58));
        }

        return s;
    }
}