Tools and utilities for using maxmind geoip csv files
$ dotnet add package Code2.Data.GeoIPService for maxmind geoip csv data which defaults to storing the data in memory. The csv files can be downloaded after registering at https://www.maxmind.com/.
using System.Linq;
using Microsoft.AspNetCore.Builder;
using Code2.Data.GeoIP;
using Code2.Data.GeoIP.Models;
using Code2.Tools.Csv.Repos;
using Microsoft.Extensions.Configuration;
var builder = WebApplication.CreateBuilder(args);
// Add services to the container.
var options = builder.Configuration.GetSection(nameof(GeoIPOptions)).Get<GeoIPOptions>();
builder.Services.AddGeoIP<CityBlock, CityLocation>(options: options);
var app = builder.Build();
// Configure the HTTP request pipeline.
app.MapGet("/blocks/{ipAddress}", (IRepository<CityBlock> repo, string ipAddress) => repo.GetBlock(ipAddress));
app.MapGet("/locations/{geoNameId}", (IRepository<CityLocation> repo, int geoNameId) => repo.Get(x => x.GeoNameId == geoNameId).FirstOrDefault());
await app.Services.UseGeoIPAsync();
app.Run();
/*
launchSettings.json
"workingDirectory": "$(OutDir)",
"launchBrowser": true,
"launchUrl": "blocks/8.8.8.8"
appSettings.json
"GeoIPOptions": {
"MaxmindEdition": "GeoLite2-City-CSV",
"MaxmindLicenseKey": "<maxmind_license_key>", //set license key here
"CsvReaderErrorFile": "./csv_reader_error.log",
"CsvUpdaterErrorFile": "./csv_updater_error.log",
"EnableUpdates": true,
"LoadOnStart": true,
"UpdateOnStart": true
}
*/
using Code2.Data.GeoIP;
using Code2.Data.GeoIP.Models;
using Code2.Tools.Csv.Repos;
using Microsoft.Extensions.DependencyInjection;
IServiceCollection services = new ServiceCollection();
services.AddGeoIP<GeoIPBlock, GeoIPLocation>(options => {
options.MaxmindEdition = "GeoLite2-City-CSV";
options.MaxmindLicenseKey = "<your_license_key>"; //set license key here
options.CsvReaderErrorFile = "./csv_reader_error.log";
options.CsvUpdaterErrorFile = "./csv_updater_error.log";
options.EnableUpdates = true;
options.LoadOnStart = true;
options.UpdateOnStart = true;
});
IServiceProvider serviceProvider = services.BuildServiceProvider();
await serviceProvider.UseGeoIPAsync();
IRepository<GeoIPBlock> blocksRepo = serviceProvider.GetRequiredService<IRepository<GeoIPBlock>>();
IRepository<GeoIPLocation> locationsRepo = serviceProvider.GetRequiredService<IRepository<GeoIPLocation>>();
Console.WriteLine("App ready, type in an ip address and hit enter..");
Console.CursorVisible = true;
while (true)
{
string? ipAddress = Console.ReadLine();
if (string.IsNullOrEmpty(ipAddress)) break;
var block = blocksRepo.GetBlock(ipAddress);
if(block is null)
{
Console.WriteLine("IP Address not found");
}
else
{
var location = locationsRepo.Get(x=>x.GeoNameId == block.GeoNameId).FirstOrDefault();
Console.WriteLine($"latitude: {block.Latitude}, longitude: {block.Longitude}, country: {location?.CountryName}, city: {location?.CityName}");
}
}
public class GeoIPLocation : LocationBase
{
public string? CountryName { get; set; }
public string? CityName { get; set; }
}
public class GeoIPBlock : BlockBase
{
public double Latitude { get; set; }
public double Longitude { get; set; }
}
BlocksRepository stores the data chunked for quick access