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.

OpenSim/Data/IUserAccountData.cs

@@ -50,5 +50,6 @@ namespace OpenSim.Data
         bool Store(UserAccountData data);
         bool Delete(string field, string val);
         UserAccountData[] GetUsers(UUID scopeID, string query);
+        UserAccountData[] GetUsersWhere(UUID scopeID, string where);
     }
 }

OpenSim/Data/MSSQL/MSSQLUserAccountData.cs

@@ -238,5 +238,10 @@ namespace OpenSim.Data.MSSQL
                 return DoQuery(cmd);
             }
         }
+
+        public UserAccountData[] GetUsersWhere(UUID scopeID, string where)
+        {
+            return null;
+        }
     }
 }

OpenSim/Data/MySQL/MySQLUserAccountData.cs

@@ -80,5 +80,20 @@ namespace OpenSim.Data.MySQL
 
             return DoQuery(cmd);
         }
+
+        public UserAccountData[] GetUsersWhere(UUID scopeID, string where)
+        {
+            MySqlCommand cmd = new MySqlCommand();
+
+            if (scopeID != UUID.Zero)
+            {
+                where = "(ScopeID=?ScopeID or ScopeID='00000000-0000-0000-0000-000000000000') and (" + where + ")";
+                cmd.Parameters.AddWithValue("?ScopeID", scopeID.ToString());
+            }
+
+            cmd.CommandText = String.Format("select * from {0} where " + where, m_Realm);
+
+            return DoQuery(cmd);
+        }
     }
 }

OpenSim/Data/Null/NullUserAccountData.cs

@@ -156,5 +156,10 @@ namespace OpenSim.Data.Null
 
             return false;
         }
+
+        public UserAccountData[] GetUsersWhere(UUID scopeID, string where)
+        {
+            return null;
+        }
     }
 }

OpenSim/Data/SQLite/SQLiteUserAccountData.cs

@@ -81,5 +81,10 @@ namespace OpenSim.Data.SQLite
 
             return DoQuery(cmd);
         }
+
+        public UserAccountData[] GetUsersWhere(UUID scopeID, string where)
+        {
+            return null;
+        }
     }
 }

OpenSim/Data/SQLiteLegacy/SQLiteUserAccountData.cs

@@ -77,5 +77,10 @@ namespace OpenSim.Data.SQLiteLegacy
 
             return DoQuery(cmd);
         }
+
+        public UserAccountData[] GetUsersWhere(UUID scopeID, string where)
+        {
+            return null;
+        }
     }
 }

OpenSim/Region/CoreModules/ServiceConnectorsOut/UserAccounts/LocalUserAccountServiceConnector.cs

@@ -172,6 +172,11 @@ namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.UserAccounts
             return m_UserService.GetUserAccount(scopeID, Email);
         }
 
+        public List<UserAccount> GetUserAccountsWhere(UUID scopeID, string query)
+        {
+            return null;
+        }
+
         public List<UserAccount> GetUserAccounts(UUID scopeID, string query)
         {
             return m_UserService.GetUserAccounts(scopeID, query);

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)
         {

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)
+            if (data == null || data.Data == null)
             {
-                if (!data.Data.ContainsKey("passwordHash") ||
+                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;
+
+            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;
         }
     }

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)
         {

OpenSim/Services/Connectors/SimianGrid/SimianUserAccountServiceConnector.cs

@@ -191,6 +191,11 @@ namespace OpenSim.Services.Connectors.SimianGrid
             return accounts;
         }
 
+        public List<UserAccount> GetUserAccountsWhere(UUID scopeID, string query)
+        {
+            return null;
+        }
+
         public bool StoreUserAccount(UserAccount data)
         {
             m_log.InfoFormat("[SIMIAN ACCOUNT CONNECTOR]: Storing user account for " + data.Name);

OpenSim/Services/Connectors/UserAccounts/UserAccountServiceConnector.cs

@@ -187,6 +187,11 @@ namespace OpenSim.Services.Connectors
             return accounts;
         }
 
+        public List<UserAccount> GetUserAccountsWhere(UUID scopeID, string where)
+        {
+            return null; // Not implemented for regions
+        }
+
         public virtual bool StoreUserAccount(UserAccount data)
         {
             Dictionary<string, object> sendData = new Dictionary<string, object>();

OpenSim/Services/Interfaces/IUserAccountService.cs

@@ -150,6 +150,7 @@ namespace OpenSim.Services.Interfaces
         /// <param name="query"></param>
         /// <returns></returns>
         List<UserAccount> GetUserAccounts(UUID scopeID, string query);
+        List<UserAccount> GetUserAccountsWhere(UUID scopeID, string where);
 
         /// <summary>
         /// Store the data given, wich replaces the stored data, therefore must be complete.

OpenSim/Services/LLLoginService/LLLoginService.cs

@@ -113,7 +113,8 @@ namespace OpenSim.Services.LLLoginService
             Object[] args = new Object[] { config };
             m_UserAccountService = ServerUtils.LoadPlugin<IUserAccountService>(accountService, args);
             m_GridUserService = ServerUtils.LoadPlugin<IGridUserService>(gridUserService, args);
-            m_AuthenticationService = ServerUtils.LoadPlugin<IAuthenticationService>(authService, args);
+            Object[] authArgs = new Object[] { config, m_UserAccountService };
+            m_AuthenticationService = ServerUtils.LoadPlugin<IAuthenticationService>(authService, authArgs);
             m_InventoryService = ServerUtils.LoadPlugin<IInventoryService>(invService, args);
 
             if (gridService != string.Empty)

OpenSim/Services/UserAccountService/UserAccountService.cs

@@ -282,6 +282,21 @@ namespace OpenSim.Services.UserAccountService
             return ret;
         }
 
+        public List<UserAccount> GetUserAccountsWhere(UUID scopeID, string where)
+        {
+            UserAccountData[] d = m_Database.GetUsersWhere(scopeID, where);
+
+            if (d == null)
+                return new List<UserAccount>();
+
+            List<UserAccount> ret = new List<UserAccount>();
+
+            foreach (UserAccountData data in d)
+                ret.Add(MakeUserAccount(data));
+
+            return ret;
+        }
+
         #endregion
 
         #region Console commands

prebuild.xml

@@ -1091,6 +1091,7 @@
       <Reference name="OpenSim.Framework.Servers.HttpServer"/>
       <Reference name="OpenSim.Services.Interfaces"/>
       <Reference name="OpenSim.Services.Base"/>
+      <Reference name="OpenSim.Server.Base"/>
       <Reference name="OpenSim.Services.Connectors"/>
       <Reference name="OpenSim.Data"/>
       <Reference name="Nini" path="../../../bin/"/>