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//
// System.Web.Security.MembershipProvider
//
// Authors:
// Ben Maurer (bmaurer@users.sourceforge.net)
// Lluis Sanchez Gual (lluis@novell.com)
//
// (C) 2003 Ben Maurer
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0
using System.Configuration.Provider;
using System.Web.Configuration;
using System.Security.Cryptography;
using System.Text;
namespace System.Web.Security
{
public abstract class MembershipProvider : ProviderBase
{
protected MembershipProvider ()
{
}
public abstract bool ChangePassword (string name, string oldPwd, string newPwd);
public abstract bool ChangePasswordQuestionAndAnswer (string name, string password, string newPwdQuestion, string newPwdAnswer);
public abstract MembershipUser CreateUser (string username, string password, string email, string pwdQuestion, string pwdAnswer, bool isApproved, object providerUserKey, out MembershipCreateStatus status);
public abstract bool DeleteUser (string name, bool deleteAllRelatedData);
public abstract MembershipUserCollection FindUsersByEmail (string emailToMatch, int pageIndex, int pageSize, out int totalRecords);
public abstract MembershipUserCollection FindUsersByName (string nameToMatch, int pageIndex, int pageSize, out int totalRecords);
public abstract MembershipUserCollection GetAllUsers (int pageIndex, int pageSize, out int totalRecords);
public abstract int GetNumberOfUsersOnline ();
public abstract string GetPassword (string name, string answer);
public abstract MembershipUser GetUser (string name, bool userIsOnline);
public abstract MembershipUser GetUser (object providerUserKey, bool userIsOnline);
public abstract string GetUserNameByEmail (string email);
public abstract string ResetPassword (string name, string answer);
public abstract void UpdateUser (MembershipUser user);
public abstract bool ValidateUser (string name, string password);
public abstract bool UnlockUser (string userName);
public abstract string ApplicationName { get; set; }
public abstract bool EnablePasswordReset { get; }
public abstract bool EnablePasswordRetrieval { get; }
public abstract bool RequiresQuestionAndAnswer { get; }
public abstract int MaxInvalidPasswordAttempts { get; }
public abstract int MinRequiredNonAlphanumericCharacters { get; }
public abstract int MinRequiredPasswordLength { get; }
public abstract int PasswordAttemptWindow { get; }
public abstract MembershipPasswordFormat PasswordFormat { get; }
public abstract string PasswordStrengthRegularExpression { get; }
public abstract bool RequiresUniqueEmail { get; }
protected virtual void OnValidatingPassword (ValidatePasswordEventArgs args)
{
if (ValidatingPassword != null)
ValidatingPassword (this, args);
}
SymmetricAlgorithm GetAlg (out byte [] decryptionKey)
{
MachineKeySection section = (MachineKeySection) WebConfigurationManager.GetSection ("system.web/machineKey");
if (section.DecryptionKey.StartsWith ("AutoGenerate"))
throw new ProviderException ("You must explicitly specify a decryption key in the <machineKey> section when using encrypted passwords.");
string alg_type = section.Decryption;
if (alg_type == "Auto")
alg_type = "AES";
SymmetricAlgorithm alg = null;
if (alg_type == "AES")
alg = Rijndael.Create ();
else if (alg_type == "3DES")
alg = TripleDES.Create ();
else
throw new ProviderException (String.Format ("Unsupported decryption attribute '{0}' in <machineKey> configuration section", alg_type));
decryptionKey = section.DecryptionKey192Bits;
return alg;
}
internal const int SALT_BYTES = 16;
protected virtual byte [] DecryptPassword (byte [] encodedPassword)
{
byte [] decryptionKey;
using (SymmetricAlgorithm alg = GetAlg (out decryptionKey)) {
alg.Key = decryptionKey;
using (ICryptoTransform decryptor = alg.CreateDecryptor ()) {
byte [] buf = decryptor.TransformFinalBlock (encodedPassword, 0, encodedPassword.Length);
byte [] rv = new byte [buf.Length - SALT_BYTES];
Array.Copy (buf, 16, rv, 0, buf.Length - 16);
return rv;
}
}
}
protected virtual byte[] EncryptPassword (byte[] password)
{
byte [] decryptionKey;
byte [] iv = new byte [SALT_BYTES];
Array.Copy (password, 0, iv, 0, SALT_BYTES);
Array.Clear (password, 0, SALT_BYTES);
using (SymmetricAlgorithm alg = GetAlg (out decryptionKey)) {
using (ICryptoTransform encryptor = alg.CreateEncryptor (decryptionKey, iv)) {
return encryptor.TransformFinalBlock (password, 0, password.Length);
}
}
}
public event MembershipValidatePasswordEventHandler ValidatingPassword;
}
}
#endif
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