jellyfin/Emby.Server.Implementations/Networking/IPNetwork/IPNetworkCollection.cs
Erwin de Haan ec1f5dc317 Mayor code cleanup
Add Argument*Exceptions now use proper nameof operators.

Added exception messages to quite a few Argument*Exceptions.

Fixed rethorwing to be proper syntax.

Added a ton of null checkes. (This is only a start, there are about 500 places that need proper null handling)

Added some TODOs to log certain exceptions.

Fix sln again.

Fixed all AssemblyInfo's and added proper copyright (where I could find them)

We live in *current year*.

Fixed the use of braces.

Fixed a ton of properties, and made a fair amount of functions static that should be and can be static.

Made more Methods that should be static static.

You can now use static to find bad functions!

Removed unused variable. And added one more proper XML comment.
2019-01-10 20:38:53 +01:00

128 lines
3.2 KiB
C#

using System.Collections;
using System.Collections.Generic;
using System.Numerics;
namespace System.Net
{
public class IPNetworkCollection : IEnumerable<IPNetwork>, IEnumerator<IPNetwork>
{
private BigInteger _enumerator;
private byte _cidrSubnet;
private IPNetwork _ipnetwork;
private byte _cidr => this._ipnetwork.Cidr;
private BigInteger _broadcast => IPNetwork.ToBigInteger(this._ipnetwork.Broadcast);
private BigInteger _lastUsable => IPNetwork.ToBigInteger(this._ipnetwork.LastUsable);
private BigInteger _network => IPNetwork.ToBigInteger(this._ipnetwork.Network);
#if TRAVISCI
public
#else
internal
#endif
IPNetworkCollection(IPNetwork ipnetwork, byte cidrSubnet)
{
int maxCidr = ipnetwork.AddressFamily == Sockets.AddressFamily.InterNetwork ? 32 : 128;
if (cidrSubnet > maxCidr)
{
throw new ArgumentOutOfRangeException(nameof(cidrSubnet));
}
if (cidrSubnet < ipnetwork.Cidr)
{
throw new ArgumentException("cidr");
}
this._cidrSubnet = cidrSubnet;
this._ipnetwork = ipnetwork;
this._enumerator = -1;
}
#region Count, Array, Enumerator
public BigInteger Count
{
get
{
BigInteger count = BigInteger.Pow(2, this._cidrSubnet - this._cidr);
return count;
}
}
public IPNetwork this[BigInteger i]
{
get
{
if (i >= this.Count)
{
throw new ArgumentOutOfRangeException(nameof(i));
}
BigInteger last = this._ipnetwork.AddressFamily == Sockets.AddressFamily.InterNetworkV6
? this._lastUsable : this._broadcast;
BigInteger increment = (last - this._network) / this.Count;
BigInteger uintNetwork = this._network + ((increment + 1) * i);
IPNetwork ipn = new IPNetwork(uintNetwork, this._ipnetwork.AddressFamily, this._cidrSubnet);
return ipn;
}
}
#endregion
#region IEnumerable Members
IEnumerator<IPNetwork> IEnumerable<IPNetwork>.GetEnumerator()
{
return this;
}
IEnumerator IEnumerable.GetEnumerator()
{
return this;
}
#region IEnumerator<IPNetwork> Members
public IPNetwork Current => this[this._enumerator];
#endregion
#region IDisposable Members
public void Dispose()
{
// nothing to dispose
return;
}
#endregion
#region IEnumerator Members
object IEnumerator.Current => this.Current;
public bool MoveNext()
{
this._enumerator++;
if (this._enumerator >= this.Count)
{
return false;
}
return true;
}
public void Reset()
{
this._enumerator = -1;
}
#endregion
#endregion
}
}