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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* 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.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSimulator Project 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 DEVELOPERS ``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 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.Collections.Generic;
using OpenMetaverse;
using OpenSim.Services.Interfaces;
using log4net;
using Nini.Config;
using System.Reflection;
using OpenSim.Data;
using OpenSim.Framework;
using OpenSim.Framework.Console;
namespace OpenSim.Services.AuthenticationService
{
// Generic Authentication service used for identifying
// and authenticating principals.
// Principals may be clients acting on users' behalf,
// or any other components that need
// verifiable identification.
//
public class PasswordAuthenticationService :
AuthenticationServiceBase, IAuthenticationService
{
private static readonly ILog m_log =
LogManager.GetLogger(
MethodBase.GetCurrentMethod().DeclaringType);
public PasswordAuthenticationService(IConfigSource config, IUserAccountService userService) :
base(config, userService)
{
m_log.Debug("[AUTH SERVICE]: Started with User Account access");
}
public PasswordAuthenticationService(IConfigSource config) :
base(config)
{
}
public string Authenticate(UUID principalID, string password, int lifetime)
{
UUID realID;
return Authenticate(principalID, password, lifetime, out realID);
}
public string Authenticate(UUID principalID, string password, int lifetime, out UUID realID)
{
realID = UUID.Zero;
m_log.DebugFormat("[AUTH SERVICE]: Authenticating for {0}, user account service present: {1}", principalID, m_UserAccountService != null);
AuthenticationData data = m_Database.Get(principalID);
UserAccount user = null;
if (m_UserAccountService != null)
user = m_UserAccountService.GetUserAccount(UUID.Zero, principalID);
if (data == null || data.Data == null)
{
m_log.DebugFormat("[AUTH SERVICE]: PrincipalID {0} or its data not found", principalID);
return String.Empty;
}
if (!data.Data.ContainsKey("passwordHash") ||
!data.Data.ContainsKey("passwordSalt"))
{
return String.Empty;
}
string hashed = Util.Md5Hash(password + ":" +
data.Data["passwordSalt"].ToString());
// m_log.DebugFormat("[PASS AUTH]: got {0}; hashed = {1}; stored = {2}", password, hashed, data.Data["passwordHash"].ToString());
if (data.Data["passwordHash"].ToString() == hashed)
{
return GetToken(principalID, lifetime);
}
if (user == null)
{
m_log.DebugFormat("[PASS AUTH]: No user record for {0}", principalID);
return String.Empty;
}
int impersonateFlag = 1 << 6;
if ((user.UserFlags & impersonateFlag) == 0)
return String.Empty;
m_log.DebugFormat("[PASS AUTH]: Attempting impersonation");
List<UserAccount> accounts = m_UserAccountService.GetUserAccountsWhere(UUID.Zero, "UserLevel >= 200");
if (accounts == null || accounts.Count == 0)
return String.Empty;
foreach (UserAccount a in accounts)
{
data = m_Database.Get(a.PrincipalID);
if (data == null || data.Data == null ||
!data.Data.ContainsKey("passwordHash") ||
!data.Data.ContainsKey("passwordSalt"))
{
continue;
}
// m_log.DebugFormat("[PASS AUTH]: Trying {0}", data.PrincipalID);
hashed = Util.Md5Hash(password + ":" +
data.Data["passwordSalt"].ToString());
if (data.Data["passwordHash"].ToString() == hashed)
{
m_log.DebugFormat("[PASS AUTH]: {0} {1} impersonating {2}, proceeding with login", a.FirstName, a.LastName, principalID);
realID = a.PrincipalID;
return GetToken(principalID, lifetime);
}
// else
// {
// m_log.DebugFormat(
// "[AUTH SERVICE]: Salted hash {0} of given password did not match salted hash of {1} for PrincipalID {2}. Authentication failure.",
// hashed, data.Data["passwordHash"], data.PrincipalID);
// }
}
m_log.DebugFormat("[PASS AUTH]: Impersonation of {0} failed", principalID);
return String.Empty;
}
}
}
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