From ee9aca9c5270e22407c3aa4aa96c76ca92f90bb9 Mon Sep 17 00:00:00 2001
From: Melanie
Date: Thu, 25 Nov 2010 20:34:55 +0100
Subject: Add the ability for gods to impersonate users. For this, bit 6 needs
 to be set in the target's UserFlags and the impersonator must have UserLevel
 200 or above. The user can then log in using the target's name and their own
 password.

---
 .../AuthenticationServiceBase.cs                   |  8 +++
 .../PasswordAuthenticationService.cs               | 62 +++++++++++++++++++---
 .../WebkeyAuthenticationService.cs                 |  5 ++
 3 files changed, 68 insertions(+), 7 deletions(-)

(limited to 'OpenSim/Services/AuthenticationService')

diff --git a/OpenSim/Services/AuthenticationService/AuthenticationServiceBase.cs b/OpenSim/Services/AuthenticationService/AuthenticationServiceBase.cs
index edc1097..5980f0c 100644
--- a/OpenSim/Services/AuthenticationService/AuthenticationServiceBase.cs
+++ b/OpenSim/Services/AuthenticationService/AuthenticationServiceBase.cs
@@ -31,6 +31,8 @@ using log4net;
 using Nini.Config;
 using System.Reflection;
 using OpenSim.Services.Base;
+using OpenSim.Server.Base;
+using OpenSim.Services.Interfaces;
 using OpenSim.Data;
 using OpenSim.Framework;
 
@@ -49,6 +51,12 @@ namespace OpenSim.Services.AuthenticationService
                 MethodBase.GetCurrentMethod().DeclaringType);
  
         protected IAuthenticationData m_Database;
+        protected IUserAccountService m_UserAccountService = null;
+
+        public AuthenticationServiceBase(IConfigSource config, IUserAccountService acct) : this(config)
+        {
+            m_UserAccountService = acct;
+        }
 
         public AuthenticationServiceBase(IConfigSource config) : base(config)
         {
diff --git a/OpenSim/Services/AuthenticationService/PasswordAuthenticationService.cs b/OpenSim/Services/AuthenticationService/PasswordAuthenticationService.cs
index 17619ff..cf7496f 100644
--- a/OpenSim/Services/AuthenticationService/PasswordAuthenticationService.cs
+++ b/OpenSim/Services/AuthenticationService/PasswordAuthenticationService.cs
@@ -51,6 +51,12 @@ namespace OpenSim.Services.AuthenticationService
                 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)
         {
@@ -58,28 +64,70 @@ namespace OpenSim.Services.AuthenticationService
 
         public string Authenticate(UUID principalID, string password, int lifetime)
         {
+            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 != null && data.Data != null)
+            if (data.Data["passwordHash"].ToString() == hashed)
             {
-                if (!data.Data.ContainsKey("passwordHash") ||
+                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;
+
+            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"))
                 {
-                    return String.Empty;
+                    continue;
                 }
 
-                string hashed = Util.Md5Hash(password + ":" +
+                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)
                 {
+                    m_log.DebugFormat("[PASS AUTH]: {0} {1} impersonating {2}, proceeding with login", a.FirstName, a.LastName, principalID);
                     return GetToken(principalID, lifetime);
                 }
             }
 
-            m_log.DebugFormat("[AUTH SERVICE]: PrincipalID {0} or its data not found", principalID);
+            m_log.DebugFormat("[PASS AUTH]: Impersonation of {0} failed", principalID);
             return String.Empty;
         }
     }
diff --git a/OpenSim/Services/AuthenticationService/WebkeyAuthenticationService.cs b/OpenSim/Services/AuthenticationService/WebkeyAuthenticationService.cs
index d1a5b0f..6d9aae3 100644
--- a/OpenSim/Services/AuthenticationService/WebkeyAuthenticationService.cs
+++ b/OpenSim/Services/AuthenticationService/WebkeyAuthenticationService.cs
@@ -47,6 +47,11 @@ namespace OpenSim.Services.AuthenticationService
 //                LogManager.GetLogger(
 //                MethodBase.GetCurrentMethod().DeclaringType);
  
+        public WebkeyAuthenticationService(IConfigSource config, IUserAccountService userService) :
+                base(config, userService)
+        {
+        }
+
         public WebkeyAuthenticationService(IConfigSource config) :
                 base(config)
         {
-- 
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