jellyfin-server/MediaBrowser.Server.Implementations/Connect/ConnectEntryPoint.cs

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using MediaBrowser.Common;
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Connect;
using MediaBrowser.Controller.Plugins;
using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Net;
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using System;
using System.IO;
using System.Net;
using System.Text;
using System.Threading;
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using System.Threading.Tasks;
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using CommonIO;
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using MediaBrowser.Common.IO;
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namespace MediaBrowser.Server.Implementations.Connect
{
public class ConnectEntryPoint : IServerEntryPoint
{
private Timer _timer;
private readonly IHttpClient _httpClient;
private readonly IApplicationPaths _appPaths;
private readonly ILogger _logger;
private readonly IConnectManager _connectManager;
private readonly INetworkManager _networkManager;
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private readonly IApplicationHost _appHost;
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private readonly IFileSystem _fileSystem;
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public ConnectEntryPoint(IHttpClient httpClient, IApplicationPaths appPaths, ILogger logger, INetworkManager networkManager, IConnectManager connectManager, IApplicationHost appHost, IFileSystem fileSystem)
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{
_httpClient = httpClient;
_appPaths = appPaths;
_logger = logger;
_networkManager = networkManager;
_connectManager = connectManager;
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_appHost = appHost;
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_fileSystem = fileSystem;
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}
public void Run()
{
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Task.Run(() => LoadCachedAddress());
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_timer = new Timer(TimerCallback, null, TimeSpan.FromSeconds(5), TimeSpan.FromHours(3));
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}
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private readonly string[] _ipLookups = { "http://bot.whatismyipaddress.com", "https://connect.emby.media/service/ip" };
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private async void TimerCallback(object state)
{
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var index = 0;
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foreach (var ipLookupUrl in _ipLookups)
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{
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try
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{
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// Sometimes whatismyipaddress might fail, but it won't do us any good having users raise alarms over it.
var logErrors = index > 0;
#if DEBUG
logErrors = true;
#endif
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using (var stream = await _httpClient.Get(new HttpRequestOptions
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{
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Url = ipLookupUrl,
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UserAgent = "Emby/" + _appHost.ApplicationVersion,
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LogErrors = logErrors
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}).ConfigureAwait(false))
{
using (var reader = new StreamReader(stream))
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{
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var address = await reader.ReadToEndAsync().ConfigureAwait(false);
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if (IsValid(address, ipLookupUrl))
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{
((ConnectManager)_connectManager).OnWanAddressResolved(address);
CacheAddress(address);
return;
}
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}
}
}
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catch (HttpException)
{
}
catch (Exception ex)
{
_logger.ErrorException("Error getting connection info", ex);
}
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index++;
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}
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}
private string CacheFilePath
{
get { return Path.Combine(_appPaths.DataPath, "wan.txt"); }
}
private void CacheAddress(string address)
{
var path = CacheFilePath;
try
{
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_fileSystem.CreateDirectory(Path.GetDirectoryName(path));
_fileSystem.WriteAllText(path, address, Encoding.UTF8);
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}
catch (Exception ex)
{
_logger.ErrorException("Error saving data", ex);
}
}
private void LoadCachedAddress()
{
var path = CacheFilePath;
try
{
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var endpoint = _fileSystem.ReadAllText(path, Encoding.UTF8);
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if (IsValid(endpoint, "cache"))
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{
((ConnectManager)_connectManager).OnWanAddressResolved(endpoint);
}
}
catch (IOException)
{
// File isn't there. no biggie
}
catch (Exception ex)
{
_logger.ErrorException("Error loading data", ex);
}
}
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private bool IsValid(string address, string source)
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{
IPAddress ipAddress;
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var valid = IPAddress.TryParse(address, out ipAddress);
if (!valid)
{
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_logger.Error("{0} is not a valid ip address. Source: {1}", address, source);
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}
return valid;
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}
public void Dispose()
{
if (_timer != null)
{
_timer.Dispose();
_timer = null;
}
}
}
}