add: listgeo to inspect alts

src/main/java/io/ib67/sfcraft/geoip/GeoIPService.java

@@ -1,6 +1,8 @@
 package io.ib67.sfcraft.geoip;
 
 import com.maxmind.geoip2.exception.GeoIp2Exception;
+import com.maxmind.geoip2.record.City;
+import com.maxmind.geoip2.record.Country;
 import lombok.SneakyThrows;
 
 import java.io.Closeable;
@@ -9,4 +11,8 @@ import java.time.Clock;
 
 public interface GeoIPService extends Closeable {
     Clock clockOf(InetAddress address) throws GeoIp2Exception;
+
+    City cityOf(InetAddress address) throws GeoIp2Exception;
+
+    Country countryOf(InetAddress address) throws GeoIp2Exception;
 }

src/main/java/io/ib67/sfcraft/geoip/MaxMindGeoIPService.java

@@ -7,7 +7,8 @@ import com.google.inject.Singleton;
 import com.maxmind.db.CHMCache;
 import com.maxmind.geoip2.DatabaseReader;
 import com.maxmind.geoip2.exception.GeoIp2Exception;
-import io.ib67.sfcraft.SFCraft;
+import com.maxmind.geoip2.record.City;
+import com.maxmind.geoip2.record.Country;
 import io.ib67.sfcraft.inject.ConfigRoot;
 import lombok.SneakyThrows;
 import lombok.extern.log4j.Log4j2;
@@ -42,6 +43,19 @@ public class MaxMindGeoIPService implements Module, GeoIPService {
         return Clock.system(TimeZone.getTimeZone(databaseReader.city(address).getLocation().getTimeZone()).toZoneId());
     }
 
+    @Override
+    @SneakyThrows
+    public City cityOf(InetAddress address) throws GeoIp2Exception {
+        return databaseReader.city(address).getCity();
+    }
+
+    @Override
+    @SneakyThrows
+    public Country countryOf(InetAddress address) throws GeoIp2Exception {
+        return databaseReader.country(address).getCountry();
+    }
+
+    @SneakyThrows
     private DatabaseReader loadData() throws InterruptedException {
         try {
             return new DatabaseReader.Builder(mmdbPath.toFile()).withCache(new CHMCache()).build();

src/main/java/io/ib67/sfcraft/module/command/ManagementModule.java

@@ -1,8 +1,12 @@
 package io.ib67.sfcraft.module.command;
 
+import com.google.inject.Inject;
+import com.maxmind.geoip2.exception.GeoIp2Exception;
 import com.mojang.brigadier.CommandDispatcher;
 import com.mojang.brigadier.builder.LiteralArgumentBuilder;
 import com.mojang.brigadier.context.CommandContext;
+import io.ib67.sfcraft.geoip.GeoIPService;
+import io.ib67.sfcraft.util.Helper;
 import io.ib67.sfcraft.util.Permission;
 import io.ib67.sfcraft.util.SFConsts;
 import io.ib67.sfcraft.ServerModule;
@@ -14,12 +18,20 @@ import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.command.CommandManager;
 import net.minecraft.server.command.ServerCommandSource;
 import net.minecraft.server.network.ServerPlayNetworkHandler;
+import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.text.Text;
 import net.minecraft.util.Colors;
 
 import java.lang.reflect.Field;
+import java.net.Inet4Address;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.UnknownHostException;
 
 public class ManagementModule extends ServerModule {
+    @Inject
+    private GeoIPService geoIPService;
+
     @Override
     public void onInitialize() {
         CommandRegistrationCallback.EVENT.register(this::registerCommands);
@@ -44,6 +56,32 @@ public class ManagementModule extends ServerModule {
                 .requires(it -> it.hasPermissionLevel(2) || SFConsts.COMMAND_LISTPERM.hasPermission(it.getPlayer()))
                 .executes(this::listPerms)
         );
+        dispatcher.register(LiteralArgumentBuilder.<ServerCommandSource>literal("listgeo")
+                .requires(it -> this.isEnabled())
+                .requires(it -> it.hasPermissionLevel(2) || SFConsts.COMMAND_LISTGEO.hasPermission(it.getPlayer()))
+                .executes(this::listGeo)
+        );
+    }
+
+    private int listGeo(CommandContext<ServerCommandSource> ctx) {
+        var src = ctx.getSource();
+        var server = src.getServer();
+        src.sendMessage(Text.of("List of player with cities:"));
+        for (ServerPlayerEntity serverPlayerEntity : server.getPlayerManager().getPlayerList()) {
+            try {
+                var addr = InetAddress.getByName(serverPlayerEntity.getIp());
+                var city = geoIPService.cityOf(addr);
+                src.sendMessage(
+                        Text.literal(" - ")
+                                .append(Text.literal("[" + city.getName() + "] ").withColor(Colors.BLUE))
+                                .append(Text.literal(serverPlayerEntity.getName().getLiteralString()))
+                                .append(Text.literal(" (" + Helper.hideIp(addr) + ")").withColor(Colors.LIGHT_GRAY))
+                );
+            } catch (GeoIp2Exception | UnknownHostException e) {
+                src.sendMessage(Text.literal(" - [FAILED TO FETCH] " + serverPlayerEntity.getName().getLiteralString()).withColor(Colors.LIGHT_RED));
+            }
+        }
+        return 0;
     }
 
     public int enterSudoMode(CommandContext<ServerCommandSource> ctx) {

src/main/java/io/ib67/sfcraft/util/Helper.java

@@ -20,6 +20,7 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Direction;
 import net.minecraft.world.World;
 
+import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -102,4 +103,14 @@ public class Helper {
         return block instanceof SaplingBlock
                 || block instanceof CropBlock;
     }
+
+    public static String hideIp(InetAddress addr) {
+        var _addr = addr.getHostAddress();
+        var q = _addr.split("\\.");
+        if (q.length == 0) {
+            // ipv6 is not supported
+            return _addr;
+        }
+        return q[0] + "." + q[1] + ".*.*";
+    }
 }

src/main/java/io/ib67/sfcraft/util/SFConsts.java

@@ -4,6 +4,7 @@ import io.ib67.sfcraft.util.Permission;
 import lombok.experimental.UtilityClass;
 import net.fabricmc.loader.api.FabricLoader;
 import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.server.network.ServerPlayerEntity;
 
 @UtilityClass
 public class SFConsts {
@@ -18,6 +19,7 @@ public class SFConsts {
     public static final Permission<PlayerEntity> COMMAND_UNBLOCKSERVER = ofSFCPermission("command.unblockserver", false);
     public static final Permission<PlayerEntity> COMMAND_LISTOFFLINE = ofSFCPermission("command.listoffline", false);
     public static final Permission<PlayerEntity> COMMAND_LISTPERM = ofSFCPermission("command.listperm", false);
+    public static final Permission<PlayerEntity> COMMAND_LISTGEO = ofSFCPermission("command.listgeo", false);
 
     public static Permission<PlayerEntity> ofSFCPermission(String key, boolean byDefault) {
         return new Permission<>("sfcraft." + key, byDefault);