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Re-ordered code for the match

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pull/3007/head
BaronGreenback 5 years ago
parent 6c2139a4c1
commit 46006a1aff
1 changed files with 217 additions and 214 deletions
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431
Emby.Server.Implementations/Networking/NetworkManager.cs
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@ -16,10 +16,13 @@ namespace Emby.Server.Implementations.Networking
public class NetworkManager : INetworkManager
{
private readonly ILogger<NetworkManager> _logger;
private IPAddress[] _localIpAddresses;
private readonly object _localIpAddressSyncLock = new object();
private readonly object _subnetLookupLock = new object();
private readonly Dictionary<string, List<string>> _subnetLookup = new Dictionary<string, List<string>>(StringComparer.Ordinal);
private IPAddress[] _localIpAddresses;
private List<PhysicalAddress> _macAddresses;
/// <summary>
@ -40,219 +43,6 @@ namespace Emby.Server.Implementations.Networking
/// <inheritdoc/>
public Func<string[]> LocalSubnetsFn { get; set; }
/// <inheritdoc/>
public IPAddress[] GetLocalIpAddresses()
{
lock (_localIpAddressSyncLock)
{
if (_localIpAddresses == null)
{
var addresses = GetLocalIpAddressesInternal().ToArray();
_localIpAddresses = addresses;
}
return _localIpAddresses;
}
}
/// <inheritdoc/>
public bool IsInPrivateAddressSpace(string endpoint)
{
return IsInPrivateAddressSpace(endpoint, true);
}
/// <inheritdoc/>
public bool IsInLocalNetwork(string endpoint)
{
return IsInLocalNetworkInternal(endpoint, true);
}
/// <inheritdoc/>
public bool IsAddressInSubnets(string addressString, string[] subnets)
{
return IsAddressInSubnets(IPAddress.Parse(addressString), addressString, subnets);
}
/// <inheritdoc/>
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;
}
/// <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;
}
/// <inheritdoc/>
public int GetRandomUnusedUdpPort()
{
var localEndPoint = new IPEndPoint(IPAddress.Any, 0);
using (var udpClient = new UdpClient(localEndPoint))
{
return ((IPEndPoint)udpClient.Client.LocalEndPoint).Port;
}
}
/// <inheritdoc/>
public List<PhysicalAddress> GetMacAddresses()
{
return _macAddresses ??= GetMacAddressesInternal().ToList();
}
/// <inheritdoc/>
public bool IsInSameSubnet(IPAddress address1, IPAddress address2, IPAddress subnetMask)
{
IPAddress network1 = GetNetworkAddress(address1, subnetMask);
IPAddress network2 = GetNetworkAddress(address2, subnetMask);
return network1.Equals(network2);
}
/// <inheritdoc/>
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);
}
/// <inheritdoc/>
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;
}
/// <summary>
/// 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.
/// </summary>
/// <param name="address">IPAddress version of the address.</param>
/// <param name="addressString">The address to check.</param>
/// <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>
/// <returns><c>false</c>if the address isn't in the subnets, <c>true</c> otherwise.</returns>
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 static Task<IPAddress[]> GetIpAddresses(string hostName)
{
return Dns.GetHostAddressesAsync(hostName);
}
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();
}
private static IEnumerable<PhysicalAddress> GetMacAddressesInternal()
=> NetworkInterface.GetAllNetworkInterfaces()
.Where(i => i.NetworkInterfaceType != NetworkInterfaceType.Loopback)
.Select(x => x.GetPhysicalAddress())
.Where(x => !x.Equals(PhysicalAddress.None));
private void OnNetworkAvailabilityChanged(object sender, NetworkAvailabilityEventArgs e)
{
_logger.LogDebug("NetworkAvailabilityChanged");
@ -276,6 +66,22 @@ namespace Emby.Server.Implementations.Networking
NetworkChanged?.Invoke(this, EventArgs.Empty);
}
/// <inheritdoc/>
public IPAddress[] GetLocalIpAddresses()
{
lock (_localIpAddressSyncLock)
{
if (_localIpAddresses == null)
{
var addresses = GetLocalIpAddressesInternal().ToArray();
_localIpAddresses = addresses;
}
return _localIpAddresses;
}
}
private List<IPAddress> GetLocalIpAddressesInternal()
{
var list = GetIPsDefault().ToList();
@ -310,6 +116,12 @@ namespace Emby.Server.Implementations.Networking
.ToList();
}
/// <inheritdoc/>
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)
{
@ -357,6 +169,29 @@ namespace Emby.Server.Implementations.Networking
return false;
}
/// <inheritdoc/>
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;
}
// Gives a list of possible subnets from the system whose interface ip starts with endpointFirstPart
private List<string> GetSubnets(string endpointFirstPart)
{
@ -403,6 +238,82 @@ namespace Emby.Server.Implementations.Networking
}
}
/// <inheritdoc/>
public bool IsInLocalNetwork(string endpoint)
{
return IsInLocalNetworkInternal(endpoint, true);
}
/// <inheritdoc/>
public bool IsAddressInSubnets(string addressString, string[] subnets)
{
return IsAddressInSubnets(IPAddress.Parse(addressString), addressString, subnets);
}
/// <inheritdoc/>
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);
}
/// <summary>
/// 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.
/// </summary>
/// <param name="address">IPAddress version of the address.</param>
/// <param name="addressString">The address to check.</param>
/// <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>
/// <returns><c>false</c>if the address isn't in the subnets, <c>true</c> otherwise.</returns>
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))
@ -489,6 +400,11 @@ 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;
@ -518,6 +434,60 @@ 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;
}
/// <inheritdoc/>
public int GetRandomUnusedUdpPort()
{
var localEndPoint = new IPEndPoint(IPAddress.Any, 0);
using (var udpClient = new UdpClient(localEndPoint))
{
return ((IPEndPoint)udpClient.Client.LocalEndPoint).Port;
}
}
/// <inheritdoc/>
public List<PhysicalAddress> GetMacAddresses()
{
return _macAddresses ??= GetMacAddressesInternal().ToList();
}
private static IEnumerable<PhysicalAddress> GetMacAddressesInternal()
=> NetworkInterface.GetAllNetworkInterfaces()
.Where(i => i.NetworkInterfaceType != NetworkInterfaceType.Loopback)
.Select(x => x.GetPhysicalAddress())
.Where(x => !x.Equals(PhysicalAddress.None));
/// <inheritdoc/>
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();
@ -536,5 +506,38 @@ namespace Emby.Server.Implementations.Networking
return new IPAddress(broadcastAddress);
}
/// <inheritdoc/>
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;
}
}
}

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