Add the files

ProxyServer/AuthenticationList.cs

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+/*
+    Copyright © 2002, The KPD-Team
+    All rights reserved.
+    http://www.mentalis.org/
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions
+  are met:
+
+    - Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer. 
+
+    - Neither the name of the KPD-Team, nor the names of its contributors
+       may be used to endorse or promote products derived from this
+       software without specific prior written permission. 
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+  THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+  OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+using System;
+using System.Text;
+using System.Security.Cryptography;
+using System.Collections;
+using System.Collections.Specialized;
+
+namespace Org.Mentalis.Proxy.Socks.Authentication {
+
+///<summary>Stores a dictionary with username/password combinations.</summary>
+///<remarks>This class can be used by a SOCKS5 listener.</remarks>
+///<remarks>This class uses an MD5 has to store the passwords in a secure manner.</remarks>
+///<remarks>The username is treated in a case-insensitive manner, the password is treated case-sensitive.</remarks>
+public class AuthenticationList {
+	///<summary>Initializes a new instance of the AuthenticationList class.</summary>
+	public AuthenticationList() {}
+	///<summary>Adds an item to the list.</summary>
+	///<param name="Username">The username to add.</param>
+	///<param name="Password">The corresponding password to add.</param>
+	///<exception cref="ArgumentNullException">Either Username or Password is null.</exception>
+	public void AddItem(string Username, string Password) {
+		if (Password == null)
+			throw new ArgumentNullException();
+		AddHash(Username, Convert.ToBase64String(new MD5CryptoServiceProvider().ComputeHash(Encoding.ASCII.GetBytes(Password))));
+	}
+	///<summary>Adds an item to the list.</summary>
+	///<param name="Username">The username to add.</param>
+	///<param name="PassHash">The hashed password to add.</param>
+	///<exception cref="ArgumentNullException">Either Username or Password is null.</exception>
+	public void AddHash(string Username, string PassHash) {
+		if (Username == null || PassHash == null)
+			throw new ArgumentNullException();
+		if (Listing.ContainsKey(Username)) {
+			Listing[Username] = PassHash;
+		} else {
+			Listing.Add(Username, PassHash);
+		}
+	}
+	///<summary>Removes an item from the list.</summary>
+	///<param name="Username">The username to remove.</param>
+	///<exception cref="ArgumentNullException">Username is null.</exception>
+	public void RemoveItem(string Username) {
+		if (Username == null)
+			throw new ArgumentNullException();
+		Listing.Remove(Username);
+	}
+	///<summary>Checks whether a user/pass combination is present in the collection or not.</summary>
+	///<param name="Username">The username to search for.</param>
+	///<param name="Password">The corresponding password to search for.</param>
+	///<returns>True when the user/pass combination is present in the collection, false otherwise.</returns>
+	public bool IsItemPresent(string Username, string Password) {
+		return IsHashPresent(Username, Convert.ToBase64String(new MD5CryptoServiceProvider().ComputeHash(Encoding.ASCII.GetBytes(Password))));
+	}
+	///<summary>Checks whether a username is present in the collection or not.</summary>
+	///<param name="Username">The username to search for.</param>
+	///<returns>True when the username is present in the collection, false otherwise.</returns>
+	public bool IsUserPresent(string Username) {
+		return Listing.ContainsKey(Username);
+	}
+	///<summary>Checks whether a user/passhash combination is present in the collection or not.</summary>
+	///<param name="Username">The username to search for.</param>
+	///<param name="PassHash">The corresponding password hash to search for.</param>
+	///<returns>True when the user/passhash combination is present in the collection, false otherwise.</returns>
+	public bool IsHashPresent(string Username, string PassHash) {
+		return Listing.ContainsKey(Username) && Listing[Username].Equals(PassHash);
+	}
+	///<summary>Gets the StringDictionary that's used to store the user/pass combinations.</summary>
+	///<value>A StringDictionary object that's used to store the user/pass combinations.</value>
+	protected StringDictionary Listing {
+		get {
+			return m_Listing;
+		}
+	}
+	///<summary>Gets an array with all the keys in the authentication list.</summary>
+	///<value>An array of strings containing all the keys in the authentication list.</value>
+	public string[] Keys {
+		get {
+			ICollection keys = Listing.Keys;
+			string [] ret = new string[keys.Count];
+			keys.CopyTo(ret, 0);
+			return ret;
+		}
+	}
+	///<summary>Gets an array with all the hashes in the authentication list.</summary>
+	///<value>An array of strings containing all the hashes in the authentication list.</value>
+	public string[] Hashes {
+		get {
+			ICollection values = Listing.Values;
+			string [] ret = new string[values.Count];
+			values.CopyTo(ret, 0);
+			return ret;
+		}
+	}
+	///<summary>Clears the authentication list.</summary>
+	public void Clear() {
+		Listing.Clear();
+	}
+	// private variables
+	/// <summary>Holds the value of the Listing property.</summary>
+	private StringDictionary m_Listing = new StringDictionary();
+}
+
+}