diff --git a/Emby.Dlna/Main/DlnaEntryPoint.cs b/Emby.Dlna/Main/DlnaEntryPoint.cs index c5d60b2a0..721350483 100644 --- a/Emby.Dlna/Main/DlnaEntryPoint.cs +++ b/Emby.Dlna/Main/DlnaEntryPoint.cs @@ -266,6 +266,12 @@ namespace Emby.Dlna.Main continue; } + // Limit to LAN addresses only + if (!_networkManager.IsAddressInSubnets(address, true, true)) + { + continue; + } + var fullService = "urn:schemas-upnp-org:device:MediaServer:1"; _logger.LogInformation("Registering publisher for {0} on {1}", fullService, address); diff --git a/Emby.Server.Implementations/ApplicationHost.cs b/Emby.Server.Implementations/ApplicationHost.cs index 33aec1a06..97fc2c004 100644 --- a/Emby.Server.Implementations/ApplicationHost.cs +++ b/Emby.Server.Implementations/ApplicationHost.cs @@ -1274,7 +1274,7 @@ namespace Emby.Server.Implementations if (addresses.Count == 0) { - addresses.AddRange(_networkManager.GetLocalIpAddresses(ServerConfigurationManager.Configuration.IgnoreVirtualInterfaces)); + addresses.AddRange(_networkManager.GetLocalIpAddresses()); } var resultList = new List(); diff --git a/Emby.Server.Implementations/Networking/NetworkManager.cs b/Emby.Server.Implementations/Networking/NetworkManager.cs index b3e88b667..465530888 100644 --- a/Emby.Server.Implementations/Networking/NetworkManager.cs +++ b/Emby.Server.Implementations/Networking/NetworkManager.cs @@ -56,13 +56,13 @@ namespace Emby.Server.Implementations.Networking NetworkChanged?.Invoke(this, EventArgs.Empty); } - public IPAddress[] GetLocalIpAddresses(bool ignoreVirtualInterface = true) + public IPAddress[] GetLocalIpAddresses() { lock (_localIpAddressSyncLock) { if (_localIpAddresses == null) { - var addresses = GetLocalIpAddressesInternal(ignoreVirtualInterface).ToArray(); + var addresses = GetLocalIpAddressesInternal().ToArray(); _localIpAddresses = addresses; } @@ -71,42 +71,45 @@ namespace Emby.Server.Implementations.Networking } } - private List GetLocalIpAddressesInternal(bool ignoreVirtualInterface) + private List GetLocalIpAddressesInternal() { - var list = GetIPsDefault(ignoreVirtualInterface).ToList(); + var list = GetIPsDefault().ToList(); if (list.Count == 0) { list = GetLocalIpAddressesFallback().GetAwaiter().GetResult().ToList(); } - var listClone = list.ToList(); + var listClone = new List(); - return list + var subnets = LocalSubnetsFn(); + + foreach (var i in list) + { + if (i.IsIPv6LinkLocal || i.ToString().StartsWith("169.254.", StringComparison.OrdinalIgnoreCase)) + { + continue; + } + if (Array.IndexOf(subnets, "[" + i.ToString() + "]") == -1) + { + listClone.Add(i); + } + } + + return listClone .OrderBy(i => i.AddressFamily == AddressFamily.InterNetwork ? 0 : 1) - .ThenBy(i => listClone.IndexOf(i)) - .Where(FilterIpAddress) + // .ThenBy(i => listClone.IndexOf(i)) .GroupBy(i => i.ToString()) .Select(x => x.First()) .ToList(); } - private static bool FilterIpAddress(IPAddress address) - { - if (address.IsIPv6LinkLocal - || address.ToString().StartsWith("169.", StringComparison.OrdinalIgnoreCase)) - { - return false; - } - - return true; - } - public bool IsInPrivateAddressSpace(string endpoint) { return IsInPrivateAddressSpace(endpoint, true); } + // checks if the address in endpoint is an RFC1918, RFC1122, or RFC3927 address private bool IsInPrivateAddressSpace(string endpoint, bool checkSubnets) { if (string.Equals(endpoint, "::1", StringComparison.OrdinalIgnoreCase)) @@ -128,23 +131,28 @@ namespace Emby.Server.Implementations.Networking } // 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)) + if (endpoint.ToLower() == "localhost") { return true; } - if (checkSubnets && endpoint.StartsWith("192.168", StringComparison.OrdinalIgnoreCase)) + try { - return true; + byte[] octet = IPAddress.Parse(endpoint).GetAddressBytes(); + + if ((octet[0] == 10) || + (octet[0] == 172 && (octet[1] >= 16 && octet[1] <= 31)) || // RFC1918 + (octet[0] == 192 && octet[1] == 168) || // RFC1918 + (octet[0] == 127) || // RFC1122 + (octet[0] == 169 && octet[1] == 254)) // RFC3927 + { + return false; + } + } + catch + { + // return false; } if (checkSubnets && IsInPrivateAddressSpaceAndLocalSubnet(endpoint)) @@ -177,6 +185,7 @@ namespace Emby.Server.Implementations.Networking return false; } + // Gives a list of possible subnets from the system whose interface ip starts with endpointFirstPart private List GetSubnets(string endpointFirstPart) { lock (_subnetLookupLock) @@ -222,19 +231,6 @@ namespace Emby.Server.Implementations.Networking } } - 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); @@ -245,23 +241,57 @@ namespace Emby.Server.Implementations.Networking return IsAddressInSubnets(IPAddress.Parse(addressString), addressString, subnets); } + // returns true if address is in the LAN list in the config file + // always returns false if address has been excluded from the LAN if excludeInterfaces is true + // and excludes RFC addresses if excludeRFC is true + public bool IsAddressInSubnets(IPAddress address, bool excludeInterfaces, bool excludeRFC) + { + byte[] octet = address.GetAddressBytes(); + + 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)) { - var ipNetwork = IPNetwork.Parse(normalizedSubnet); - if (ipNetwork.Contains(address)) + try { - return true; + var ipNetwork = IPNetwork.Parse(normalizedSubnet); + if (ipNetwork.Contains(address)) + { + return true; + } + } + catch + { + // Ignoring - invalid subnet passed encountered. } } } @@ -359,8 +389,8 @@ namespace Emby.Server.Implementations.Networking { return Dns.GetHostAddressesAsync(hostName); } - - private IEnumerable GetIPsDefault(bool ignoreVirtualInterface) + + private IEnumerable GetIPsDefault() { IEnumerable interfaces; @@ -380,15 +410,7 @@ namespace Emby.Server.Implementations.Networking { 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 - || (ignoreVirtualInterface - && (addr.Address.Equals(IPAddress.Any) || addr.Address.Equals(IPAddress.IPv6Any)))) - { - return Enumerable.Empty(); - } + // Exclude any addresses if they appear in the LAN list in [ ] return ipProperties.UnicastAddresses .Select(i => i.Address) @@ -494,15 +516,12 @@ namespace Emby.Server.Implementations.Networking foreach (NetworkInterface ni in interfaces) { - if (ni.GetIPProperties().GatewayAddresses.FirstOrDefault() != null) + foreach (UnicastIPAddressInformation ip in ni.GetIPProperties().UnicastAddresses) { - foreach (UnicastIPAddressInformation ip in ni.GetIPProperties().UnicastAddresses) + if (ip.Address.Equals(address) && ip.IPv4Mask != null) { - if (ip.Address.Equals(address) && ip.IPv4Mask != null) - { - return ip.IPv4Mask; - } - } + return ip.IPv4Mask; + } } } diff --git a/MediaBrowser.Common/Net/INetworkManager.cs b/MediaBrowser.Common/Net/INetworkManager.cs index 3ba75abd8..b7ec1d122 100644 --- a/MediaBrowser.Common/Net/INetworkManager.cs +++ b/MediaBrowser.Common/Net/INetworkManager.cs @@ -41,10 +41,12 @@ namespace MediaBrowser.Common.Net /// true if [is in local network] [the specified endpoint]; otherwise, false. bool IsInLocalNetwork(string endpoint); - IPAddress[] GetLocalIpAddresses(bool ignoreVirtualInterface); + IPAddress[] GetLocalIpAddresses(); bool IsAddressInSubnets(string addressString, string[] subnets); + bool IsAddressInSubnets(IPAddress address, bool excludeInterfaces, bool excludeRFC); + bool IsInSameSubnet(IPAddress address1, IPAddress address2, IPAddress subnetMask); IPAddress GetLocalIpSubnetMask(IPAddress address); diff --git a/RSSDP/SsdpCommunicationsServer.cs b/RSSDP/SsdpCommunicationsServer.cs index 18097ef24..47da52005 100644 --- a/RSSDP/SsdpCommunicationsServer.cs +++ b/RSSDP/SsdpCommunicationsServer.cs @@ -370,13 +370,13 @@ namespace Rssdp.Infrastructure if (_enableMultiSocketBinding) { - foreach (var address in _networkManager.GetLocalIpAddresses(_config.Configuration.IgnoreVirtualInterfaces)) + foreach (var address in _networkManager.GetLocalIpAddresses()) { if (address.AddressFamily == AddressFamily.InterNetworkV6) { // Not support IPv6 right now continue; - } + } try { diff --git a/RSSDP/SsdpDeviceLocator.cs b/RSSDP/SsdpDeviceLocator.cs index 59a2710d5..b62c50e28 100644 --- a/RSSDP/SsdpDeviceLocator.cs +++ b/RSSDP/SsdpDeviceLocator.cs @@ -357,7 +357,7 @@ namespace Rssdp.Infrastructure private void ProcessSearchResponseMessage(HttpResponseMessage message, IPAddress localIpAddress) { if (!message.IsSuccessStatusCode) return; - + var location = GetFirstHeaderUriValue("Location", message); if (location != null) {