mirror of
https://github.com/jellyfin/jellyfin.git
synced 2026-03-14 06:06:41 +00:00
Changes styles as suggested by @barronpm
Added addtional comments & source type as per intellisense suggestion change code as per sonacloud
This commit is contained in:
BaronGreenback
@@ -10,16 +10,22 @@ using Microsoft.Extensions.Logging;
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namespace Emby.Server.Implementations.Networking
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{
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/// <summary>
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/// Class to take care of network interface management.
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/// </summary>
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public class NetworkManager : INetworkManager
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{
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private readonly ILogger _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 Dictionary<string, List<string>> _subnetLookup = new Dictionary<string, List<string>>(StringComparer.Ordinal);
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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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/// Initializes a new instance of the <see cref="NetworkManager"/> class.
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/// </summary>
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/// <param name="logger">Logger to use for messages.</param>
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public NetworkManager(ILogger<NetworkManager> logger)
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{
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_logger = logger;
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@@ -28,10 +34,232 @@ namespace Emby.Server.Implementations.Networking
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NetworkChange.NetworkAvailabilityChanged += OnNetworkAvailabilityChanged;
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}
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/// <inheritdoc/>
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public event EventHandler NetworkChanged;
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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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var udpClient = new UdpClient(localEndPoint);
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using (udpClient)
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{
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var port = ((IPEndPoint)udpClient.Client.LocalEndPoint).Port;
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return 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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if (_macAddresses == null)
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{
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_macAddresses = GetMacAddressesInternal().ToList();
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}
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return _macAddresses;
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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 false within the ranges givin 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 != null && x != 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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@@ -55,21 +283,6 @@ namespace Emby.Server.Implementations.Networking
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NetworkChanged?.Invoke(this, EventArgs.Empty);
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}
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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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@@ -89,6 +302,7 @@ namespace Emby.Server.Implementations.Networking
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{
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continue;
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}
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if (Array.IndexOf(subnets, "[" + i.ToString() + "]") == -1)
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{
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listClone.Add(i);
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@@ -103,12 +317,7 @@ namespace Emby.Server.Implementations.Networking
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.ToList();
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}
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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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// 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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if (string.Equals(endpoint, "::1", StringComparison.OrdinalIgnoreCase))
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@@ -116,12 +325,12 @@ namespace Emby.Server.Implementations.Networking
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return true;
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}
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// ipv6
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// IPV6
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if (endpoint.Split('.').Length > 4)
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{
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// Handle ipv4 mapped to ipv6
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var originalEndpoint = endpoint;
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endpoint = endpoint.Replace("::ffff:", string.Empty);
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endpoint = endpoint.Replace("::ffff:", string.Empty, StringComparison.OrdinalIgnoreCase);
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if (string.Equals(endpoint, originalEndpoint, StringComparison.OrdinalIgnoreCase))
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{
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@@ -131,27 +340,20 @@ namespace Emby.Server.Implementations.Networking
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// Private address space:
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if (endpoint.ToLower() == "localhost")
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if (string.Equals(endpoint, "localhost", StringComparison.OrdinalIgnoreCase))
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{
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return true;
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}
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try
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{
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byte[] octet = IPAddress.Parse(endpoint).GetAddressBytes();
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byte[] octet = IPAddress.Parse(endpoint).GetAddressBytes();
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if ((octet[0] == 10) ||
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(octet[0] == 172 && (octet[1] >= 16 && octet[1] <= 31)) || // RFC1918
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(octet[0] == 192 && octet[1] == 168) || // RFC1918
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(octet[0] == 127) || // RFC1122
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(octet[0] == 169 && octet[1] == 254)) // RFC3927
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{
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return false;
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}
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}
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catch
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if ((octet[0] == 10) ||
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(octet[0] == 172 && (octet[1] >= 16 && octet[1] <= 31)) || // RFC1918
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(octet[0] == 192 && octet[1] == 168) || // RFC1918
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(octet[0] == 127) || // RFC1122
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(octet[0] == 169 && octet[1] == 254)) // RFC3927
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{
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return false;
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}
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if (checkSubnets && IsInPrivateAddressSpaceAndLocalSubnet(endpoint))
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@@ -162,29 +364,7 @@ namespace Emby.Server.Implementations.Networking
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return false;
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}
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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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|
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var subnets = GetSubnets(endpointFirstPart);
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|
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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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|
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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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|
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return false;
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}
|
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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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// 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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lock (_subnetLookupLock)
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@@ -230,74 +410,6 @@ namespace Emby.Server.Implementations.Networking
|
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}
|
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}
|
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|
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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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|
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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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|
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// returns true if address is in the LAN list in the config file
|
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// always returns false if address has been excluded from the LAN if excludeInterfaces is true
|
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// and excludes RFC addresses if excludeRFC is true
|
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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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|
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if ((octet[0] == 127) || // RFC1122
|
||||
(octet[0] == 169 && octet[1] == 254)) // RFC3927
|
||||
{
|
||||
// don't use on loopback or 169 interfaces
|
||||
return false;
|
||||
}
|
||||
|
||||
string addressString = address.ToString();
|
||||
string excludeAddress = "[" + addressString + "]";
|
||||
var subnets = LocalSubnetsFn();
|
||||
|
||||
// Exclude any addresses if they appear in the LAN list in [ ]
|
||||
if (Array.IndexOf(subnets, excludeAddress) != -1)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
return IsAddressInSubnets(address, addressString, subnets);
|
||||
}
|
||||
|
||||
// Checks to see if address/addressString (same but different type) falls within subnets[]
|
||||
private static bool IsAddressInSubnets(IPAddress address, string addressString, string[] subnets)
|
||||
{
|
||||
foreach (var subnet in subnets)
|
||||
{
|
||||
var normalizedSubnet = subnet.Trim();
|
||||
// is the subnet a host address and does it match the address being passes?
|
||||
if (string.Equals(normalizedSubnet, addressString, StringComparison.OrdinalIgnoreCase))
|
||||
{
|
||||
return true;
|
||||
}
|
||||
// parse CIDR subnets and see if address falls within it.
|
||||
if (normalizedSubnet.Contains('/', StringComparison.Ordinal))
|
||||
{
|
||||
try
|
||||
{
|
||||
var ipNetwork = IPNetwork.Parse(normalizedSubnet);
|
||||
if (ipNetwork.Contains(address))
|
||||
{
|
||||
return true;
|
||||
}
|
||||
}
|
||||
catch
|
||||
{
|
||||
// Ignoring - invalid subnet passed encountered.
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
private bool IsInLocalNetworkInternal(string endpoint, bool resolveHost)
|
||||
{
|
||||
if (string.IsNullOrEmpty(endpoint))
|
||||
@@ -315,7 +427,7 @@ namespace Emby.Server.Implementations.Networking
|
||||
var localSubnets = localSubnetsFn();
|
||||
foreach (var subnet in localSubnets)
|
||||
{
|
||||
// only validate if there's at least one valid entry
|
||||
// Only validate if there's at least one valid entry.
|
||||
if (!string.IsNullOrWhiteSpace(subnet))
|
||||
{
|
||||
return IsAddressInSubnets(address, addressString, localSubnets) || IsInPrivateAddressSpace(addressString, false);
|
||||
@@ -372,7 +484,7 @@ namespace Emby.Server.Implementations.Networking
|
||||
}
|
||||
catch (InvalidOperationException)
|
||||
{
|
||||
// Can happen with reverse proxy or IIS url rewriting
|
||||
// Can happen with reverse proxy or IIS url rewriting?
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
@@ -384,11 +496,6 @@ namespace Emby.Server.Implementations.Networking
|
||||
return false;
|
||||
}
|
||||
|
||||
private static Task<IPAddress[]> GetIpAddresses(string hostName)
|
||||
{
|
||||
return Dns.GetHostAddressesAsync(hostName);
|
||||
}
|
||||
|
||||
private IEnumerable<IPAddress> GetIPsDefault()
|
||||
{
|
||||
IEnumerable<NetworkInterface> interfaces;
|
||||
@@ -418,64 +525,6 @@ namespace Emby.Server.Implementations.Networking
|
||||
.Select(x => x.First());
|
||||
}
|
||||
|
||||
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<PhysicalAddress> _macAddresses;
|
||||
public List<PhysicalAddress> GetMacAddresses()
|
||||
{
|
||||
if (_macAddresses == null)
|
||||
{
|
||||
_macAddresses = GetMacAddressesInternal().ToList();
|
||||
}
|
||||
|
||||
return _macAddresses;
|
||||
}
|
||||
|
||||
private static IEnumerable<PhysicalAddress> GetMacAddressesInternal()
|
||||
=> NetworkInterface.GetAllNetworkInterfaces()
|
||||
.Where(i => i.NetworkInterfaceType != NetworkInterfaceType.Loopback)
|
||||
.Select(x => x.GetPhysicalAddress())
|
||||
.Where(x => x != null && x != PhysicalAddress.None);
|
||||
|
||||
public bool IsInSameSubnet(IPAddress address1, IPAddress address2, IPAddress subnetMask)
|
||||
{
|
||||
IPAddress network1 = GetNetworkAddress(address1, subnetMask);
|
||||
IPAddress network2 = GetNetworkAddress(address2, subnetMask);
|
||||
return network1.Equals(network2);
|
||||
}
|
||||
|
||||
private IPAddress GetNetworkAddress(IPAddress address, IPAddress subnetMask)
|
||||
{
|
||||
byte[] ipAdressBytes = address.GetAddressBytes();
|
||||
@@ -494,37 +543,5 @@ namespace Emby.Server.Implementations.Networking
|
||||
|
||||
return new IPAddress(broadcastAddress);
|
||||
}
|
||||
|
||||
public IPAddress GetLocalIpSubnetMask(IPAddress address)
|
||||
{
|
||||
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 null;
|
||||
}
|
||||
|
||||
foreach (NetworkInterface ni in interfaces)
|
||||
{
|
||||
foreach (UnicastIPAddressInformation ip in ni.GetIPProperties().UnicastAddresses)
|
||||
{
|
||||
if (ip.Address.Equals(address) && ip.IPv4Mask != null)
|
||||
{
|
||||
return ip.IPv4Mask;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user