diff options
Diffstat (limited to 'Emby.Server.Implementations/Networking/NetworkManager.cs')
| -rw-r--r-- | Emby.Server.Implementations/Networking/NetworkManager.cs | 727 |
1 files changed, 0 insertions, 727 deletions
diff --git a/Emby.Server.Implementations/Networking/NetworkManager.cs b/Emby.Server.Implementations/Networking/NetworkManager.cs deleted file mode 100644 index 60cc9b88e..000000000 --- a/Emby.Server.Implementations/Networking/NetworkManager.cs +++ /dev/null @@ -1,727 +0,0 @@ -using System; -using System.Collections.Generic; -using System.Globalization; -using System.Linq; -using System.Net; -using System.Net.NetworkInformation; -using System.Net.Sockets; -using System.Threading.Tasks; -using MediaBrowser.Common.Net; -using MediaBrowser.Model.Extensions; -using MediaBrowser.Model.IO; -using MediaBrowser.Model.Net; -using MediaBrowser.Model.System; -using Microsoft.Extensions.Logging; - -namespace Emby.Server.Implementations.Networking -{ - public class NetworkManager : INetworkManager - { - protected ILogger Logger { get; private set; } - - public event EventHandler NetworkChanged; - public Func<string[]> LocalSubnetsFn { get; set; } - - public NetworkManager( - ILoggerFactory loggerFactory, - IEnvironmentInfo environment) - { - Logger = loggerFactory.CreateLogger(nameof(NetworkManager)); - - // In FreeBSD these events cause a crash - if (environment.OperatingSystem != MediaBrowser.Model.System.OperatingSystem.BSD) - { - try - { - NetworkChange.NetworkAddressChanged += NetworkChange_NetworkAddressChanged; - } - catch (Exception ex) - { - Logger.LogError(ex, "Error binding to NetworkAddressChanged event"); - } - - try - { - NetworkChange.NetworkAvailabilityChanged += NetworkChange_NetworkAvailabilityChanged; - } - catch (Exception ex) - { - Logger.LogError(ex, "Error binding to NetworkChange_NetworkAvailabilityChanged event"); - } - } - } - - private void NetworkChange_NetworkAvailabilityChanged(object sender, NetworkAvailabilityEventArgs e) - { - Logger.LogDebug("NetworkAvailabilityChanged"); - OnNetworkChanged(); - } - - private void NetworkChange_NetworkAddressChanged(object sender, EventArgs e) - { - Logger.LogDebug("NetworkAddressChanged"); - OnNetworkChanged(); - } - - private void OnNetworkChanged() - { - lock (_localIpAddressSyncLock) - { - _localIpAddresses = null; - _macAddresses = null; - } - if (NetworkChanged != null) - { - NetworkChanged(this, EventArgs.Empty); - } - } - - private IpAddressInfo[] _localIpAddresses; - private readonly object _localIpAddressSyncLock = new object(); - - public IpAddressInfo[] GetLocalIpAddresses() - { - lock (_localIpAddressSyncLock) - { - if (_localIpAddresses == null) - { - var addresses = GetLocalIpAddressesInternal().Result.Select(ToIpAddressInfo).ToArray(); - - _localIpAddresses = addresses; - - return addresses; - } - return _localIpAddresses; - } - } - - private async Task<List<IPAddress>> GetLocalIpAddressesInternal() - { - var list = GetIPsDefault() - .ToList(); - - if (list.Count == 0) - { - list.AddRange(await GetLocalIpAddressesFallback().ConfigureAwait(false)); - } - - var listClone = list.ToList(); - - return list - .OrderBy(i => i.AddressFamily == AddressFamily.InterNetwork ? 0 : 1) - .ThenBy(i => listClone.IndexOf(i)) - .Where(FilterIpAddress) - .GroupBy(i => i.ToString()) - .Select(x => x.First()) - .ToList(); - } - - private static bool FilterIpAddress(IPAddress address) - { - var addressString = address.ToString(); - - if (addressString.StartsWith("169.", StringComparison.OrdinalIgnoreCase)) - { - return false; - } - - return true; - } - - public bool IsInPrivateAddressSpace(string endpoint) - { - return IsInPrivateAddressSpace(endpoint, true); - } - - private bool IsInPrivateAddressSpace(string endpoint, bool checkSubnets) - { - if (string.Equals(endpoint, "::1", StringComparison.OrdinalIgnoreCase)) - { - return true; - } - - // ipv6 - if (endpoint.Split('.').Length > 4) - { - // Handle ipv4 mapped to ipv6 - var originalEndpoint = endpoint; - endpoint = endpoint.Replace("::ffff:", string.Empty); - - if (string.Equals(endpoint, originalEndpoint, StringComparison.OrdinalIgnoreCase)) - { - return false; - } - } - - // Private address space: - // http://en.wikipedia.org/wiki/Private_network - - if (endpoint.StartsWith("172.", StringComparison.OrdinalIgnoreCase)) - { - return Is172AddressPrivate(endpoint); - } - - if (endpoint.StartsWith("localhost", StringComparison.OrdinalIgnoreCase) || - endpoint.StartsWith("127.", StringComparison.OrdinalIgnoreCase) || - endpoint.StartsWith("169.", StringComparison.OrdinalIgnoreCase)) - { - return true; - } - - if (checkSubnets && endpoint.StartsWith("192.168", StringComparison.OrdinalIgnoreCase)) - { - return true; - } - - if (checkSubnets && IsInPrivateAddressSpaceAndLocalSubnet(endpoint)) - { - return true; - } - - return false; - } - - public bool IsInPrivateAddressSpaceAndLocalSubnet(string endpoint) - { - if (endpoint.StartsWith("10.", StringComparison.OrdinalIgnoreCase)) - { - var endpointFirstPart = endpoint.Split('.')[0]; - - var subnets = GetSubnets(endpointFirstPart); - - foreach (var subnet_Match in subnets) - { - //logger.LogDebug("subnet_Match:" + subnet_Match); - - if (endpoint.StartsWith(subnet_Match + ".", StringComparison.OrdinalIgnoreCase)) - { - return true; - } - } - } - - return false; - } - - private Dictionary<string, List<string>> _subnetLookup = new Dictionary<string, List<string>>(StringComparer.Ordinal); - private List<string> GetSubnets(string endpointFirstPart) - { - lock (_subnetLookup) - { - if (_subnetLookup.TryGetValue(endpointFirstPart, out var subnets)) - { - return subnets; - } - - subnets = new List<string>(); - - foreach (var adapter in NetworkInterface.GetAllNetworkInterfaces()) - { - foreach (var unicastIPAddressInformation in adapter.GetIPProperties().UnicastAddresses) - { - if (unicastIPAddressInformation.Address.AddressFamily == AddressFamily.InterNetwork && endpointFirstPart == unicastIPAddressInformation.Address.ToString().Split('.')[0]) - { - int subnet_Test = 0; - foreach (string part in unicastIPAddressInformation.IPv4Mask.ToString().Split('.')) - { - if (part.Equals("0")) break; - subnet_Test++; - } - - var subnet_Match = string.Join(".", unicastIPAddressInformation.Address.ToString().Split('.').Take(subnet_Test).ToArray()); - - // TODO: Is this check necessary? - if (adapter.OperationalStatus == OperationalStatus.Up) - { - subnets.Add(subnet_Match); - } - } - } - } - - _subnetLookup[endpointFirstPart] = subnets; - - return subnets; - } - } - - private static bool Is172AddressPrivate(string endpoint) - { - for (var i = 16; i <= 31; i++) - { - if (endpoint.StartsWith("172." + i.ToString(CultureInfo.InvariantCulture) + ".", StringComparison.OrdinalIgnoreCase)) - { - return true; - } - } - - return false; - } - - public bool IsInLocalNetwork(string endpoint) - { - return IsInLocalNetworkInternal(endpoint, true); - } - - public bool IsAddressInSubnets(string addressString, string[] subnets) - { - return IsAddressInSubnets(IPAddress.Parse(addressString), addressString, subnets); - } - - private static bool IsAddressInSubnets(IPAddress address, string addressString, string[] subnets) - { - foreach (var subnet in subnets) - { - var normalizedSubnet = subnet.Trim(); - - if (string.Equals(normalizedSubnet, addressString, StringComparison.OrdinalIgnoreCase)) - { - return true; - } - - if (normalizedSubnet.IndexOf('/') != -1) - { - var ipnetwork = IPNetwork.IPNetwork.Parse(normalizedSubnet); - if (ipnetwork.Contains(address)) - { - return true; - } - } - } - - return false; - } - - private bool IsInLocalNetworkInternal(string endpoint, bool resolveHost) - { - if (string.IsNullOrEmpty(endpoint)) - { - throw new ArgumentNullException(nameof(endpoint)); - } - - if (IPAddress.TryParse(endpoint, out var address)) - { - var addressString = address.ToString(); - - var localSubnetsFn = LocalSubnetsFn; - if (localSubnetsFn != null) - { - var localSubnets = localSubnetsFn(); - foreach (var subnet in localSubnets) - { - // only validate if there's at least one valid entry - if (!string.IsNullOrWhiteSpace(subnet)) - { - return IsAddressInSubnets(address, addressString, localSubnets) || IsInPrivateAddressSpace(addressString, false); - } - } - } - - int lengthMatch = 100; - if (address.AddressFamily == AddressFamily.InterNetwork) - { - lengthMatch = 4; - if (IsInPrivateAddressSpace(addressString, true)) - { - return true; - } - } - else if (address.AddressFamily == AddressFamily.InterNetworkV6) - { - lengthMatch = 9; - if (IsInPrivateAddressSpace(endpoint, true)) - { - return true; - } - } - - // Should be even be doing this with ipv6? - if (addressString.Length >= lengthMatch) - { - var prefix = addressString.Substring(0, lengthMatch); - - if (GetLocalIpAddresses().Any(i => i.ToString().StartsWith(prefix, StringComparison.OrdinalIgnoreCase))) - { - return true; - } - } - } - else if (resolveHost) - { - if (Uri.TryCreate(endpoint, UriKind.RelativeOrAbsolute, out var uri)) - { - try - { - var host = uri.DnsSafeHost; - Logger.LogDebug("Resolving host {0}", host); - - address = GetIpAddresses(host).Result.FirstOrDefault(); - - if (address != null) - { - Logger.LogDebug("{0} resolved to {1}", host, address); - - return IsInLocalNetworkInternal(address.ToString(), false); - } - } - catch (InvalidOperationException) - { - // Can happen with reverse proxy or IIS url rewriting - } - catch (Exception ex) - { - Logger.LogError(ex, "Error resolving hostname"); - } - } - } - - return false; - } - - private static Task<IPAddress[]> GetIpAddresses(string hostName) - { - return Dns.GetHostAddressesAsync(hostName); - } - - private List<IPAddress> GetIPsDefault() - { - NetworkInterface[] interfaces; - - try - { - var validStatuses = new[] { OperationalStatus.Up, OperationalStatus.Unknown }; - - interfaces = NetworkInterface.GetAllNetworkInterfaces() - .Where(i => validStatuses.Contains(i.OperationalStatus)) - .ToArray(); - } - catch (Exception ex) - { - Logger.LogError(ex, "Error in GetAllNetworkInterfaces"); - return new List<IPAddress>(); - } - - return interfaces.SelectMany(network => - { - - try - { - // suppress logging because it might be causing nas device wake up - //logger.LogDebug("Querying interface: {0}. Type: {1}. Status: {2}", network.Name, network.NetworkInterfaceType, network.OperationalStatus); - - var ipProperties = network.GetIPProperties(); - - // Try to exclude virtual adapters - // http://stackoverflow.com/questions/8089685/c-sharp-finding-my-machines-local-ip-address-and-not-the-vms - var addr = ipProperties.GatewayAddresses.FirstOrDefault(); - if (addr == null || string.Equals(addr.Address.ToString(), "0.0.0.0", StringComparison.OrdinalIgnoreCase)) - { - return new List<IPAddress>(); - } - - return ipProperties.UnicastAddresses - .Select(i => i.Address) - .Where(i => i.AddressFamily == AddressFamily.InterNetwork || i.AddressFamily == AddressFamily.InterNetworkV6) - .ToList(); - } - catch (Exception ex) - { - Logger.LogError(ex, "Error querying network interface"); - return new List<IPAddress>(); - } - - }).GroupBy(i => i.ToString()) - .Select(x => x.First()) - .ToList(); - } - - private static async Task<IEnumerable<IPAddress>> GetLocalIpAddressesFallback() - { - var host = await Dns.GetHostEntryAsync(Dns.GetHostName()).ConfigureAwait(false); - - // Reverse them because the last one is usually the correct one - // It's not fool-proof so ultimately the consumer will have to examine them and decide - return host.AddressList - .Where(i => i.AddressFamily == AddressFamily.InterNetwork || i.AddressFamily == AddressFamily.InterNetworkV6) - .Reverse(); - } - - /// <summary> - /// Gets a random port number that is currently available - /// </summary> - /// <returns>System.Int32.</returns> - public int GetRandomUnusedTcpPort() - { - var listener = new TcpListener(IPAddress.Any, 0); - listener.Start(); - var port = ((IPEndPoint)listener.LocalEndpoint).Port; - listener.Stop(); - return port; - } - - public int GetRandomUnusedUdpPort() - { - var localEndPoint = new IPEndPoint(IPAddress.Any, 0); - using (var udpClient = new UdpClient(localEndPoint)) - { - var port = ((IPEndPoint)(udpClient.Client.LocalEndPoint)).Port; - return port; - } - } - - private List<string> _macAddresses; - public List<string> GetMacAddresses() - { - if (_macAddresses == null) - { - _macAddresses = GetMacAddressesInternal(); - } - return _macAddresses; - } - - private static List<string> GetMacAddressesInternal() - { - return NetworkInterface.GetAllNetworkInterfaces() - .Where(i => i.NetworkInterfaceType != NetworkInterfaceType.Loopback) - .Select(i => - { - try - { - var physicalAddress = i.GetPhysicalAddress(); - - if (physicalAddress == null) - { - return null; - } - - return physicalAddress.ToString(); - } - catch (Exception) - { - //TODO Log exception. - return null; - } - }) - .Where(i => i != null) - .ToList(); - } - - /// <summary> - /// Parses the specified endpointstring. - /// </summary> - /// <param name="endpointstring">The endpointstring.</param> - /// <returns>IPEndPoint.</returns> - public IPEndPoint Parse(string endpointstring) - { - return Parse(endpointstring, -1).Result; - } - - /// <summary> - /// Parses the specified endpointstring. - /// </summary> - /// <param name="endpointstring">The endpointstring.</param> - /// <param name="defaultport">The defaultport.</param> - /// <returns>IPEndPoint.</returns> - /// <exception cref="ArgumentException">Endpoint descriptor may not be empty.</exception> - /// <exception cref="FormatException"></exception> - private static async Task<IPEndPoint> Parse(string endpointstring, int defaultport) - { - if (string.IsNullOrEmpty(endpointstring) - || endpointstring.Trim().Length == 0) - { - throw new ArgumentException("Endpoint descriptor may not be empty."); - } - - if (defaultport != -1 && - (defaultport < IPEndPoint.MinPort - || defaultport > IPEndPoint.MaxPort)) - { - throw new ArgumentException(string.Format("Invalid default port '{0}'", defaultport)); - } - - string[] values = endpointstring.Split(new char[] { ':' }); - IPAddress ipaddy; - int port = -1; - - //check if we have an IPv6 or ports - if (values.Length <= 2) // ipv4 or hostname - { - port = values.Length == 1 ? defaultport : GetPort(values[1]); - - //try to use the address as IPv4, otherwise get hostname - if (!IPAddress.TryParse(values[0], out ipaddy)) - ipaddy = await GetIPfromHost(values[0]).ConfigureAwait(false); - } - else if (values.Length > 2) //ipv6 - { - //could [a:b:c]:d - if (values[0].StartsWith("[") && values[values.Length - 2].EndsWith("]")) - { - string ipaddressstring = string.Join(":", values.Take(values.Length - 1).ToArray()); - ipaddy = IPAddress.Parse(ipaddressstring); - port = GetPort(values[values.Length - 1]); - } - else //[a:b:c] or a:b:c - { - ipaddy = IPAddress.Parse(endpointstring); - port = defaultport; - } - } - else - { - throw new FormatException(string.Format("Invalid endpoint ipaddress '{0}'", endpointstring)); - } - - if (port == -1) - throw new ArgumentException(string.Format("No port specified: '{0}'", endpointstring)); - - return new IPEndPoint(ipaddy, port); - } - - protected static readonly CultureInfo UsCulture = new CultureInfo("en-US"); - - /// <summary> - /// Gets the port. - /// </summary> - /// <param name="p">The p.</param> - /// <returns>System.Int32.</returns> - /// <exception cref="FormatException"></exception> - private static int GetPort(string p) - { - if (!int.TryParse(p, out var port) - || port < IPEndPoint.MinPort - || port > IPEndPoint.MaxPort) - { - throw new FormatException(string.Format("Invalid end point port '{0}'", p)); - } - - return port; - } - - /// <summary> - /// Gets the I pfrom host. - /// </summary> - /// <param name="p">The p.</param> - /// <returns>IPAddress.</returns> - /// <exception cref="ArgumentException"></exception> - private static async Task<IPAddress> GetIPfromHost(string p) - { - var hosts = await Dns.GetHostAddressesAsync(p).ConfigureAwait(false); - - if (hosts == null || hosts.Length == 0) - throw new ArgumentException(string.Format("Host not found: {0}", p)); - - return hosts[0]; - } - - public IpAddressInfo ParseIpAddress(string ipAddress) - { - if (TryParseIpAddress(ipAddress, out var info)) - { - return info; - } - - throw new ArgumentException("Invalid ip address: " + ipAddress); - } - - public bool TryParseIpAddress(string ipAddress, out IpAddressInfo ipAddressInfo) - { - if (IPAddress.TryParse(ipAddress, out var address)) - { - ipAddressInfo = ToIpAddressInfo(address); - return true; - } - - ipAddressInfo = null; - return false; - } - - public static IpEndPointInfo ToIpEndPointInfo(IPEndPoint endpoint) - { - if (endpoint == null) - { - return null; - } - - return new IpEndPointInfo(ToIpAddressInfo(endpoint.Address), endpoint.Port); - } - - public static IPEndPoint ToIPEndPoint(IpEndPointInfo endpoint) - { - if (endpoint == null) - { - return null; - } - - return new IPEndPoint(ToIPAddress(endpoint.IpAddress), endpoint.Port); - } - - public static IPAddress ToIPAddress(IpAddressInfo address) - { - if (address.Equals(IpAddressInfo.Any)) - { - return IPAddress.Any; - } - if (address.Equals(IpAddressInfo.IPv6Any)) - { - return IPAddress.IPv6Any; - } - if (address.Equals(IpAddressInfo.Loopback)) - { - return IPAddress.Loopback; - } - if (address.Equals(IpAddressInfo.IPv6Loopback)) - { - return IPAddress.IPv6Loopback; - } - - return IPAddress.Parse(address.Address); - } - - public static IpAddressInfo ToIpAddressInfo(IPAddress address) - { - if (address.Equals(IPAddress.Any)) - { - return IpAddressInfo.Any; - } - if (address.Equals(IPAddress.IPv6Any)) - { - return IpAddressInfo.IPv6Any; - } - if (address.Equals(IPAddress.Loopback)) - { - return IpAddressInfo.Loopback; - } - if (address.Equals(IPAddress.IPv6Loopback)) - { - return IpAddressInfo.IPv6Loopback; - } - return new IpAddressInfo(address.ToString(), address.AddressFamily == AddressFamily.InterNetworkV6 ? IpAddressFamily.InterNetworkV6 : IpAddressFamily.InterNetwork); - } - - public async Task<IpAddressInfo[]> GetHostAddressesAsync(string host) - { - var addresses = await Dns.GetHostAddressesAsync(host).ConfigureAwait(false); - return addresses.Select(ToIpAddressInfo).ToArray(); - } - - /// <summary> - /// Gets the network shares. - /// </summary> - /// <param name="path">The path.</param> - /// <returns>IEnumerable{NetworkShare}.</returns> - public virtual IEnumerable<NetworkShare> GetNetworkShares(string path) - { - return new List<NetworkShare>(); - } - - /// <summary> - /// Gets available devices within the domain - /// </summary> - /// <returns>PC's in the Domain</returns> - public virtual IEnumerable<FileSystemEntryInfo> GetNetworkDevices() - { - return new List<FileSystemEntryInfo>(); - } - } -} |