public static bool IpMatch(string ip1, string ip2)
{
string rgxString = @"^(((\d)|(\d\d)|((1)\d\d)|(2[0-4]\d)|(25[0-5])).){3}((\d)|(\d\d)|((1)\d\d)|(2[0-4]\d)|(25[0-5]))$";
Regex rgx = new Regex(rgxString);
if (!rgx.IsMatch(ip1))
{
throw new Exception("invalid argument: ip1 in IPMatch() function is not an IP address.");
}
IPNetwork ipNetwork2 = IPNetwork.Parse(ip2);
if (!(ipNetwork2.AddressFamily == AddressFamily.InterNetwork || ipNetwork2.AddressFamily == AddressFamily.InterNetworkV6))
{
throw new Exception("invalid argument: ip2 in IPMatch() function is neither an IP address nor a CIDR.");
}
IPNetwork ipNetwork1 = IPNetwork.Parse(ip1);
if (ipNetwork1.Equals(ipNetwork2))
{
return(true);
}
return(ipNetwork1.Netmask.Equals(IPAddress.Parse(ip2)));
}
/// <summary>
/// Gets all unique <c>pairs</c> of hosts with monitoring flag set and which share the same subnet.<br/>
/// Subnets with less than or more than two hosts will be discarded.
/// </summary>
/// <param name="hamnetDbAccess">The handle to access the database.</param>
/// <param name="subnet">The subnet to return data for.</param>
/// <returns>The dictionary mapping a subnet to its unique monitored host pair.</returns>
public static IReadOnlyDictionary <IHamnetDbSubnet, IHamnetDbHosts> UniqueMonitoredHostPairsInSubnet(this IHamnetDbAccess hamnetDbAccess, IPNetwork subnet)
{
if (hamnetDbAccess == null)
{
throw new ArgumentNullException(nameof(hamnetDbAccess), "hamnetDbAccess to work with is null");
}
if (subnet == null)
{
throw new ArgumentNullException(nameof(subnet), "subnet search monitored hosts for is null");
}
var directSupportHamnetAccess = hamnetDbAccess as IDirectSupportOfHamnetDbAccessExtensions;
if (directSupportHamnetAccess != null)
{
return(directSupportHamnetAccess.UniqueMonitoredHostPairsInSubnet(subnet));
}
var hosts = hamnetDbAccess.QueryMonitoredHosts();
var allSubnets = hamnetDbAccess.QuerySubnets();
// filter out parents for which we have nested subnets
var subnets = allSubnets.Where(s => !allSubnets.Any(a => !object.ReferenceEquals(s.Subnet, a.Subnet) && s.Subnet.Contains(a.Subnet)));
var association = subnets.AssociateHosts(hosts);
var uniquePairs = association
.Where(a => subnet.Contains(a.Key.Subnet) || subnet.Equals(a.Key.Subnet))
.Where(a => a.Value.Count == 2)
.ToDictionary(k => k.Key, v => v.Value);
return(uniquePairs);
}
public bool Contains(IPNetworkProxy proxy)
{
if (proxy._isAddress && _isAddress)
{
return(_address.Equals(proxy._address));
}
if (!proxy._isAddress && !_isAddress)
{
return(_network.Equals(this._network));
}
// they are an address and we are a network
if (proxy._isAddress && !_isAddress)
{
return(_network.Contains(proxy._address));
}
return(false); // an ip address cannot contain a network
}
/// <inheritdoc />
public IReadOnlyDictionary <IHamnetDbSubnet, IHamnetDbHosts> UniqueMonitoredHostPairsInSubnet(IPNetwork subnet)
{
if (subnet == null)
{
throw new ArgumentNullException(nameof(subnet), "subnet search monitored hosts for is null");
}
lock (this.cacheRefreshLock)
{
var timeOfQuery = DateTime.UtcNow;
var association =
this.cacheDataStore.GetCacheDataSetOrNull <IReadOnlyDictionary <IHamnetDbSubnet, IHamnetDbHosts> >(DataTypes.UniqueMonitoredHostPairsInSubnet, timeOfQuery)?.Data
?? this.RefreshHostAssociations(timeOfQuery);
var uniquePairs = association
.Where(a => subnet.Contains(a.Key.Subnet) || subnet.Equals(a.Key.Subnet))
.Where(a => a.Value.Count == 2)
.ToDictionary(k => k.Key, v => v.Value);
return(uniquePairs);
}
}
