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Filter invalid IPs on external interface matching (#11766)

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gnattu 2024-05-25 23:44:03 +08:00 committed by GitHub
parent ef985896e2
commit 2eece01acc
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2 changed files with 21 additions and 1 deletions
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5
MediaBrowser.Common/Net/NetworkConstants.cs
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@ -58,6 +58,11 @@ public static class NetworkConstants
/// </summary> /// </summary>
public static readonly IPNetwork IPv4RFC1918PrivateClassC = new IPNetwork(IPAddress.Parse("192.168.0.0"), 16); public static readonly IPNetwork IPv4RFC1918PrivateClassC = new IPNetwork(IPAddress.Parse("192.168.0.0"), 16);
/// <summary>
/// IPv4 Link-Local as defined in RFC 3927.
/// </summary>
public static readonly IPNetwork IPv4RFC3927LinkLocal = new IPNetwork(IPAddress.Parse("169.254.0.0"), 16);
/// <summary> /// <summary>
/// IPv6 loopback as defined in RFC 4291. /// IPv6 loopback as defined in RFC 4291.
/// </summary> /// </summary>

17
src/Jellyfin.Networking/Manager/NetworkManager.cs
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@ -903,6 +903,17 @@ public class NetworkManager : INetworkManager, IDisposable
return false; return false;
} }
/// <summary>
/// Get if the IPAddress is Link-local.
/// </summary>
/// <param name="address">The IP Address.</param>
/// <returns>Bool indicates if the address is link-local.</returns>
public bool IsLinkLocalAddress(IPAddress address)
{
ArgumentNullException.ThrowIfNull(address);
return NetworkConstants.IPv4RFC3927LinkLocal.Contains(address) || address.IsIPv6LinkLocal;
}
/// <inheritdoc/> /// <inheritdoc/>
public bool IsInLocalNetwork(IPAddress address) public bool IsInLocalNetwork(IPAddress address)
{ {
@ -1084,7 +1095,11 @@ public class NetworkManager : INetworkManager, IDisposable
private bool MatchesExternalInterface(IPAddress source, out string result) private bool MatchesExternalInterface(IPAddress source, out string result)
{ {
// Get the first external interface address that isn't a loopback. // Get the first external interface address that isn't a loopback.
var extResult = _interfaces.Where(p => !IsInLocalNetwork(p.Address)).OrderBy(x => x.Index).ToArray(); var extResult = _interfaces
.Where(p => !IsInLocalNetwork(p.Address))
.Where(p => p.Address.AddressFamily.Equals(source.AddressFamily))
.Where(p => !IsLinkLocalAddress(p.Address))
.OrderBy(x => x.Index).ToArray();
// No external interface found // No external interface found
if (extResult.Length == 0) if (extResult.Length == 0)