mirror of
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83 lines
3.8 KiB
C#
83 lines
3.8 KiB
C#
/*
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Copyright © 2002, The KPD-Team
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All rights reserved.
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http://www.mentalis.org/
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Neither the name of the KPD-Team, nor the names of its contributors
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may be used to endorse or promote products derived from this
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software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Net;
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using System.Net.Sockets;
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using Org.Mentalis.Proxy;
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namespace Org.Mentalis.Proxy.Ftp {
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///<summary>Listens on a specific port on the proxy server and forwards all incoming FTP traffic to the appropriate server.</summary>
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public sealed class FtpListener : Listener {
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///<summary>Initializes a new instance of the FtpListener class.</summary>
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///<param name="Port">The port to listen on.</param>
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///<remarks>The FtpListener will start listening on all installed network cards.</remarks>
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///<exception cref="ArgumentException">Port is not positive.</exception>
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public FtpListener(int Port) : this(IPAddress.Any, Port) {}
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///<summary>Initializes a new instance of the FtpListener class.</summary>
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///<param name="Port">The port to listen on.</param>
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///<param name="Address">The address to listen on. You can specify IPAddress.Any to listen on all installed network cards.</param>
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///<remarks>For the security of your server, try to avoid to listen on every network card (IPAddress.Any). Listening on a local IP address is usually sufficient and much more secure.</remarks>
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///<exception cref="ArgumentNullException">Address is null.</exception>
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///<exception cref="ArgumentException">Port is not positive.</exception>
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public FtpListener(IPAddress Address, int Port) : base(Port, Address) {}
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///<summary>Called when there's an incoming client connection waiting to be accepted.</summary>
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///<param name="ar">The result of the asynchronous operation.</param>
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public override void OnAccept(IAsyncResult ar) {
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try {
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Socket NewSocket = ListenSocket.EndAccept(ar);
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if (NewSocket != null) {
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FtpClient NewClient = new FtpClient(NewSocket, new DestroyDelegate(this.RemoveClient));
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AddClient(NewClient);
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NewClient.StartHandshake();
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}
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} catch {}
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try {
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ListenSocket.BeginAccept(new AsyncCallback(this.OnAccept), ListenSocket);
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} catch {
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Dispose();
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}
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}
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///<summary>Returns a string representation of this object.</summary>
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///<returns>A string with information about this object.</returns>
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public override string ToString() {
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return "FTP service on " + Address.ToString() + ":" + Port.ToString();
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}
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///<summary>Returns a string that holds all the construction information for this object.</summary>
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///<value>A string that holds all the construction information for this object.</value>
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public override string ConstructString {
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get {
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return "host:" + Address.ToString() + ";int:" + Port.ToString();
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}
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}
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}
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}
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