Re-ordered code for the match
This commit is contained in:
BaronGreenback
parent
6c2139a4c1
commit
46006a1aff
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@ -16,10 +16,13 @@ namespace Emby.Server.Implementations.Networking
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public class NetworkManager : INetworkManager
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{
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private readonly ILogger<NetworkManager> _logger;
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private IPAddress[] _localIpAddresses;
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private readonly object _localIpAddressSyncLock = new object();
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private readonly object _subnetLookupLock = new object();
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private readonly Dictionary<string, List<string>> _subnetLookup = new Dictionary<string, List<string>>(StringComparer.Ordinal);
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private IPAddress[] _localIpAddresses;
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private List<PhysicalAddress> _macAddresses;
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/// <summary>
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@ -40,219 +43,6 @@ namespace Emby.Server.Implementations.Networking
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/// <inheritdoc/>
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public Func<string[]> LocalSubnetsFn { get; set; }
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/// <inheritdoc/>
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public IPAddress[] GetLocalIpAddresses()
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{
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lock (_localIpAddressSyncLock)
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{
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if (_localIpAddresses == null)
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{
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var addresses = GetLocalIpAddressesInternal().ToArray();
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_localIpAddresses = addresses;
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}
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return _localIpAddresses;
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}
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}
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/// <inheritdoc/>
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public bool IsInPrivateAddressSpace(string endpoint)
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{
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return IsInPrivateAddressSpace(endpoint, true);
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}
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/// <inheritdoc/>
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public bool IsInLocalNetwork(string endpoint)
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{
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return IsInLocalNetworkInternal(endpoint, true);
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}
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/// <inheritdoc/>
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public bool IsAddressInSubnets(string addressString, string[] subnets)
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{
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return IsAddressInSubnets(IPAddress.Parse(addressString), addressString, subnets);
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}
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/// <inheritdoc/>
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public bool IsInPrivateAddressSpaceAndLocalSubnet(string endpoint)
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{
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if (endpoint.StartsWith("10.", StringComparison.OrdinalIgnoreCase))
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{
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var endpointFirstPart = endpoint.Split('.')[0];
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var subnets = GetSubnets(endpointFirstPart);
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foreach (var subnet_Match in subnets)
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{
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// logger.LogDebug("subnet_Match:" + subnet_Match);
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if (endpoint.StartsWith(subnet_Match + ".", StringComparison.OrdinalIgnoreCase))
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{
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return true;
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}
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}
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}
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return false;
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}
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/// <summary>
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/// Gets a random port number that is currently available.
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/// </summary>
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/// <returns>System.Int32.</returns>
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public int GetRandomUnusedTcpPort()
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{
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var listener = new TcpListener(IPAddress.Any, 0);
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listener.Start();
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var port = ((IPEndPoint)listener.LocalEndpoint).Port;
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listener.Stop();
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return port;
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}
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/// <inheritdoc/>
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public int GetRandomUnusedUdpPort()
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{
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var localEndPoint = new IPEndPoint(IPAddress.Any, 0);
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using (var udpClient = new UdpClient(localEndPoint))
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{
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return ((IPEndPoint)udpClient.Client.LocalEndPoint).Port;
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}
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}
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/// <inheritdoc/>
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public List<PhysicalAddress> GetMacAddresses()
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{
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return _macAddresses ??= GetMacAddressesInternal().ToList();
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}
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/// <inheritdoc/>
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public bool IsInSameSubnet(IPAddress address1, IPAddress address2, IPAddress subnetMask)
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{
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IPAddress network1 = GetNetworkAddress(address1, subnetMask);
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IPAddress network2 = GetNetworkAddress(address2, subnetMask);
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return network1.Equals(network2);
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}
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/// <inheritdoc/>
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public bool IsAddressInSubnets(IPAddress address, bool excludeInterfaces, bool excludeRFC)
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{
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byte[] octet = address.GetAddressBytes();
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if ((octet[0] == 127) || // RFC1122
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(octet[0] == 169 && octet[1] == 254)) // RFC3927
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{
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// don't use on loopback or 169 interfaces
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return false;
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}
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string addressString = address.ToString();
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string excludeAddress = "[" + addressString + "]";
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var subnets = LocalSubnetsFn();
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// Exclude any addresses if they appear in the LAN list in [ ]
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if (Array.IndexOf(subnets, excludeAddress) != -1)
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{
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return false;
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}
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return IsAddressInSubnets(address, addressString, subnets);
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}
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/// <inheritdoc/>
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public IPAddress GetLocalIpSubnetMask(IPAddress address)
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{
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NetworkInterface[] interfaces;
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try
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{
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var validStatuses = new[] { OperationalStatus.Up, OperationalStatus.Unknown };
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interfaces = NetworkInterface.GetAllNetworkInterfaces()
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.Where(i => validStatuses.Contains(i.OperationalStatus))
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.ToArray();
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error in GetAllNetworkInterfaces");
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return null;
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}
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foreach (NetworkInterface ni in interfaces)
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{
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foreach (UnicastIPAddressInformation ip in ni.GetIPProperties().UnicastAddresses)
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{
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if (ip.Address.Equals(address) && ip.IPv4Mask != null)
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{
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return ip.IPv4Mask;
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}
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}
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}
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return null;
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}
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/// <summary>
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/// Checks if the give address falls within the ranges given in [subnets]. The addresses in subnets can be hosts or subnets in the CIDR format.
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/// </summary>
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/// <param name="address">IPAddress version of the address.</param>
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/// <param name="addressString">The address to check.</param>
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/// <param name="subnets">If true, check against addresses in the LAN settings which have [] arroud and return true if it matches the address give in address.</param>
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/// <returns><c>false</c>if the address isn't in the subnets, <c>true</c> otherwise.</returns>
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private static bool IsAddressInSubnets(IPAddress address, string addressString, string[] subnets)
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{
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foreach (var subnet in subnets)
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{
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var normalizedSubnet = subnet.Trim();
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// Is the subnet a host address and does it match the address being passes?
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if (string.Equals(normalizedSubnet, addressString, StringComparison.OrdinalIgnoreCase))
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{
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return true;
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}
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// Parse CIDR subnets and see if address falls within it.
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if (normalizedSubnet.Contains('/', StringComparison.Ordinal))
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{
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try
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{
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var ipNetwork = IPNetwork.Parse(normalizedSubnet);
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if (ipNetwork.Contains(address))
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{
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return true;
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}
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}
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catch
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{
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// Ignoring - invalid subnet passed encountered.
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}
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}
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}
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return false;
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}
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private static Task<IPAddress[]> GetIpAddresses(string hostName)
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{
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return Dns.GetHostAddressesAsync(hostName);
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}
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private static async Task<IEnumerable<IPAddress>> GetLocalIpAddressesFallback()
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{
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var host = await Dns.GetHostEntryAsync(Dns.GetHostName()).ConfigureAwait(false);
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// Reverse them because the last one is usually the correct one
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// It's not fool-proof so ultimately the consumer will have to examine them and decide
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return host.AddressList
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.Where(i => i.AddressFamily == AddressFamily.InterNetwork || i.AddressFamily == AddressFamily.InterNetworkV6)
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.Reverse();
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}
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private static IEnumerable<PhysicalAddress> GetMacAddressesInternal()
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=> NetworkInterface.GetAllNetworkInterfaces()
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.Where(i => i.NetworkInterfaceType != NetworkInterfaceType.Loopback)
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.Select(x => x.GetPhysicalAddress())
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.Where(x => !x.Equals(PhysicalAddress.None));
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private void OnNetworkAvailabilityChanged(object sender, NetworkAvailabilityEventArgs e)
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{
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_logger.LogDebug("NetworkAvailabilityChanged");
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@ -276,6 +66,22 @@ namespace Emby.Server.Implementations.Networking
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NetworkChanged?.Invoke(this, EventArgs.Empty);
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}
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/// <inheritdoc/>
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public IPAddress[] GetLocalIpAddresses()
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{
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lock (_localIpAddressSyncLock)
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{
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if (_localIpAddresses == null)
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{
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var addresses = GetLocalIpAddressesInternal().ToArray();
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_localIpAddresses = addresses;
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}
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return _localIpAddresses;
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}
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}
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private List<IPAddress> GetLocalIpAddressesInternal()
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{
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var list = GetIPsDefault().ToList();
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@ -310,6 +116,12 @@ namespace Emby.Server.Implementations.Networking
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.ToList();
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}
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/// <inheritdoc/>
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public bool IsInPrivateAddressSpace(string endpoint)
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{
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return IsInPrivateAddressSpace(endpoint, true);
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}
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// Checks if the address in endpoint is an RFC1918, RFC1122, or RFC3927 address
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private bool IsInPrivateAddressSpace(string endpoint, bool checkSubnets)
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{
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@ -357,6 +169,29 @@ namespace Emby.Server.Implementations.Networking
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return false;
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}
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/// <inheritdoc/>
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public bool IsInPrivateAddressSpaceAndLocalSubnet(string endpoint)
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{
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if (endpoint.StartsWith("10.", StringComparison.OrdinalIgnoreCase))
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{
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var endpointFirstPart = endpoint.Split('.')[0];
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var subnets = GetSubnets(endpointFirstPart);
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foreach (var subnet_Match in subnets)
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{
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// logger.LogDebug("subnet_Match:" + subnet_Match);
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if (endpoint.StartsWith(subnet_Match + ".", StringComparison.OrdinalIgnoreCase))
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{
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return true;
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}
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}
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}
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return false;
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}
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// Gives a list of possible subnets from the system whose interface ip starts with endpointFirstPart
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private List<string> GetSubnets(string endpointFirstPart)
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{
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@ -403,6 +238,82 @@ namespace Emby.Server.Implementations.Networking
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}
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}
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/// <inheritdoc/>
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public bool IsInLocalNetwork(string endpoint)
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{
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return IsInLocalNetworkInternal(endpoint, true);
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}
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/// <inheritdoc/>
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public bool IsAddressInSubnets(string addressString, string[] subnets)
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{
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return IsAddressInSubnets(IPAddress.Parse(addressString), addressString, subnets);
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}
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/// <inheritdoc/>
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public bool IsAddressInSubnets(IPAddress address, bool excludeInterfaces, bool excludeRFC)
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{
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byte[] octet = address.GetAddressBytes();
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if ((octet[0] == 127) || // RFC1122
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(octet[0] == 169 && octet[1] == 254)) // RFC3927
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{
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// don't use on loopback or 169 interfaces
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return false;
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}
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string addressString = address.ToString();
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string excludeAddress = "[" + addressString + "]";
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var subnets = LocalSubnetsFn();
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// Exclude any addresses if they appear in the LAN list in [ ]
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if (Array.IndexOf(subnets, excludeAddress) != -1)
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{
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return false;
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}
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return IsAddressInSubnets(address, addressString, subnets);
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}
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/// <summary>
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/// Checks if the give address falls within the ranges given in [subnets]. The addresses in subnets can be hosts or subnets in the CIDR format.
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/// </summary>
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/// <param name="address">IPAddress version of the address.</param>
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/// <param name="addressString">The address to check.</param>
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/// <param name="subnets">If true, check against addresses in the LAN settings which have [] arroud and return true if it matches the address give in address.</param>
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/// <returns><c>false</c>if the address isn't in the subnets, <c>true</c> otherwise.</returns>
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private static bool IsAddressInSubnets(IPAddress address, string addressString, string[] subnets)
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{
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foreach (var subnet in subnets)
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{
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var normalizedSubnet = subnet.Trim();
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// Is the subnet a host address and does it match the address being passes?
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if (string.Equals(normalizedSubnet, addressString, StringComparison.OrdinalIgnoreCase))
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{
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return true;
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}
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// Parse CIDR subnets and see if address falls within it.
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if (normalizedSubnet.Contains('/', StringComparison.Ordinal))
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{
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try
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{
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var ipNetwork = IPNetwork.Parse(normalizedSubnet);
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if (ipNetwork.Contains(address))
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{
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return true;
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}
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}
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catch
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{
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// Ignoring - invalid subnet passed encountered.
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}
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}
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}
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return false;
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}
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private bool IsInLocalNetworkInternal(string endpoint, bool resolveHost)
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{
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if (string.IsNullOrEmpty(endpoint))
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@ -489,6 +400,11 @@ namespace Emby.Server.Implementations.Networking
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return false;
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}
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private static Task<IPAddress[]> GetIpAddresses(string hostName)
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{
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return Dns.GetHostAddressesAsync(hostName);
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}
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private IEnumerable<IPAddress> GetIPsDefault()
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{
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IEnumerable<NetworkInterface> interfaces;
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@ -518,6 +434,60 @@ namespace Emby.Server.Implementations.Networking
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.Select(x => x.First());
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}
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private static async Task<IEnumerable<IPAddress>> GetLocalIpAddressesFallback()
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{
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var host = await Dns.GetHostEntryAsync(Dns.GetHostName()).ConfigureAwait(false);
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// Reverse them because the last one is usually the correct one
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// It's not fool-proof so ultimately the consumer will have to examine them and decide
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return host.AddressList
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.Where(i => i.AddressFamily == AddressFamily.InterNetwork || i.AddressFamily == AddressFamily.InterNetworkV6)
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.Reverse();
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}
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/// <summary>
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/// Gets a random port number that is currently available.
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/// </summary>
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/// <returns>System.Int32.</returns>
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public int GetRandomUnusedTcpPort()
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{
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var listener = new TcpListener(IPAddress.Any, 0);
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listener.Start();
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var port = ((IPEndPoint)listener.LocalEndpoint).Port;
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listener.Stop();
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return port;
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}
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/// <inheritdoc/>
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public int GetRandomUnusedUdpPort()
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{
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var localEndPoint = new IPEndPoint(IPAddress.Any, 0);
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using (var udpClient = new UdpClient(localEndPoint))
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{
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return ((IPEndPoint)udpClient.Client.LocalEndPoint).Port;
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}
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}
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/// <inheritdoc/>
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public List<PhysicalAddress> GetMacAddresses()
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{
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return _macAddresses ??= GetMacAddressesInternal().ToList();
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}
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private static IEnumerable<PhysicalAddress> GetMacAddressesInternal()
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=> NetworkInterface.GetAllNetworkInterfaces()
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.Where(i => i.NetworkInterfaceType != NetworkInterfaceType.Loopback)
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.Select(x => x.GetPhysicalAddress())
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.Where(x => !x.Equals(PhysicalAddress.None));
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/// <inheritdoc/>
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public bool IsInSameSubnet(IPAddress address1, IPAddress address2, IPAddress subnetMask)
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{
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IPAddress network1 = GetNetworkAddress(address1, subnetMask);
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IPAddress network2 = GetNetworkAddress(address2, subnetMask);
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return network1.Equals(network2);
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}
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private IPAddress GetNetworkAddress(IPAddress address, IPAddress subnetMask)
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{
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byte[] ipAdressBytes = address.GetAddressBytes();
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@ -536,5 +506,38 @@ namespace Emby.Server.Implementations.Networking
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return new IPAddress(broadcastAddress);
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}
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/// <inheritdoc/>
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public IPAddress GetLocalIpSubnetMask(IPAddress address)
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{
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NetworkInterface[] interfaces;
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try
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{
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var validStatuses = new[] { OperationalStatus.Up, OperationalStatus.Unknown };
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interfaces = NetworkInterface.GetAllNetworkInterfaces()
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.Where(i => validStatuses.Contains(i.OperationalStatus))
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.ToArray();
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error in GetAllNetworkInterfaces");
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return null;
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}
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foreach (NetworkInterface ni in interfaces)
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{
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foreach (UnicastIPAddressInformation ip in ni.GetIPProperties().UnicastAddresses)
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{
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if (ip.Address.Equals(address) && ip.IPv4Mask != null)
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{
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return ip.IPv4Mask;
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}
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}
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}
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return null;
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}
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}
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}
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