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Test for matching subnet of IP's (VPN request)

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test available ip4 host address against the endpoint (only local addresses, 10 127 192.68 169), if there's a preliminary match, it finds the subnet of the host ip (255.255.255.0) and makes sure's there's a match between host (255.255.255) and endpoint
This commit is contained in:
randomevents 2017-10-10 23:35:30 -04:00 committed by GitHub
parent 3c7ee764ec
commit 329305230e
1 changed files with 26 additions and 2 deletions
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28
Emby.Server.Implementations/Networking/NetworkManager.cs
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@ -93,12 +93,36 @@ namespace Emby.Server.Implementations.Networking
} }
return return
endpoint.StartsWith("localhost", StringComparison.OrdinalIgnoreCase) || endpoint.StartsWith("localhost", StringComparison.OrdinalIgnoreCase) ||
IsInPrivateAddressSpaceAndLocalSubnet(endpoint);
}
public bool IsInPrivateAddressSpaceAndLocalSubnet(string endpoint)
{
string subnet_Match = "";
if (
endpoint.StartsWith("127.", StringComparison.OrdinalIgnoreCase) || endpoint.StartsWith("127.", StringComparison.OrdinalIgnoreCase) ||
endpoint.StartsWith("10.", StringComparison.OrdinalIgnoreCase) || endpoint.StartsWith("10.", StringComparison.OrdinalIgnoreCase) ||
endpoint.StartsWith("192.168", StringComparison.OrdinalIgnoreCase) || endpoint.StartsWith("192.168", StringComparison.OrdinalIgnoreCase) ||
endpoint.StartsWith("169.", StringComparison.OrdinalIgnoreCase); endpoint.StartsWith("169.", StringComparison.OrdinalIgnoreCase)
)
{
foreach (NetworkInterface adapter in NetworkInterface.GetAllNetworkInterfaces())
foreach (UnicastIPAddressInformation unicastIPAddressInformation in adapter.GetIPProperties().UnicastAddresses)
if (unicastIPAddressInformation.Address.AddressFamily == AddressFamily.InterNetwork && endpoint.Split('.')[0] == unicastIPAddressInformation.Address.ToString().Split('.')[0])
{
int subnet_Test = 0;
foreach (string part in unicastIPAddressInformation.IPv4Mask.ToString().Split('.'))
{
if (part.Equals("0")) break;
subnet_Test++;
}
subnet_Match = String.Join(".", unicastIPAddressInformation.Address.ToString().Split('.').Take(subnet_Test).ToArray());
}
}
return endpoint.StartsWith(subnet_Match + ".", StringComparison.OrdinalIgnoreCase);
} }
private bool Is172AddressPrivate(string endpoint) private bool Is172AddressPrivate(string endpoint)