Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Security / SQLRoleProvider.cs / 1 / SQLRoleProvider.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Security { using System.Web; using System.Web.Configuration; using System.Security.Principal; using System.Security.Permissions; using System.Globalization; using System.Runtime.Serialization; using System.Collections; using System.Collections.Specialized; using System.Data; using System.Data.SqlClient; using System.Data.SqlTypes; using System.Text; using System.Configuration.Provider; using System.Configuration; using System.Web.DataAccess; using System.Web.Hosting; using System.Web.Util; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public class SqlRoleProvider : RoleProvider { private string _AppName; private int _SchemaVersionCheck; private string _sqlConnectionString; private int _CommandTimeout; //////////////////////////////////////////////////////////// // Public properties private int CommandTimeout { get{ return _CommandTimeout; } } public override void Initialize(string name, NameValueCollection config){ HttpRuntime.CheckAspNetHostingPermission (AspNetHostingPermissionLevel.Low, SR.Feature_not_supported_at_this_level); if (config == null) throw new ArgumentNullException("config"); if (String.IsNullOrEmpty(name)) name = "SqlRoleProvider"; if (string.IsNullOrEmpty(config["description"])) { config.Remove("description"); config.Add("description", SR.GetString(SR.RoleSqlProvider_description)); } base.Initialize(name, config); _SchemaVersionCheck = 0; _CommandTimeout = SecUtility.GetIntValue( config, "commandTimeout", 30, true, 0 ); string temp = config["connectionStringName"]; if (temp == null || temp.Length < 1) throw new ProviderException(SR.GetString(SR.Connection_name_not_specified)); _sqlConnectionString = SqlConnectionHelper.GetConnectionString(temp, true, true); if (_sqlConnectionString == null || _sqlConnectionString.Length < 1) { throw new ProviderException(SR.GetString(SR.Connection_string_not_found, temp)); } _AppName = config["applicationName"]; if (string.IsNullOrEmpty(_AppName)) _AppName = SecUtility.GetDefaultAppName(); if( _AppName.Length > 256 ) { throw new ProviderException(SR.GetString(SR.Provider_application_name_too_long)); } config.Remove("connectionStringName"); config.Remove("applicationName"); config.Remove("commandTimeout"); if (config.Count > 0) { string attribUnrecognized = config.GetKey(0); if (!String.IsNullOrEmpty(attribUnrecognized)) throw new ProviderException(SR.GetString(SR.Provider_unrecognized_attribute, attribUnrecognized)); } } private void CheckSchemaVersion( SqlConnection connection ) { string[] features = { "Role Manager" }; string version = "1"; SecUtility.CheckSchemaVersion( this, connection, features, version, ref _SchemaVersionCheck ); } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// public override bool IsUserInRole(string username, string roleName) { SecUtility.CheckParameter(ref roleName, true, true, true, 256, "roleName"); SecUtility.CheckParameter(ref username, true, false, true, 256, "username"); if (username.Length < 1) return false; try { SqlConnectionHolder holder = null; try { holder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true); CheckSchemaVersion( holder.Connection ); SqlCommand cmd = new SqlCommand("dbo.aspnet_UsersInRoles_IsUserInRole", holder.Connection); cmd.CommandType = CommandType.StoredProcedure; cmd.CommandTimeout = CommandTimeout; SqlParameter p = new SqlParameter("@ReturnValue", SqlDbType.Int); p.Direction = ParameterDirection.ReturnValue; cmd.Parameters.Add(p); cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName)); cmd.Parameters.Add(CreateInputParam("@UserName", SqlDbType.NVarChar, username)); cmd.Parameters.Add(CreateInputParam("@RoleName", SqlDbType.NVarChar, roleName)); cmd.ExecuteNonQuery(); int iStatus = GetReturnValue(cmd); switch(iStatus) { case 0: return false; case 1: return true; case 2: return false; // throw new ProviderException(SR.GetString(SR.Provider_user_not_found)); case 3: return false; // throw new ProviderException(SR.GetString(SR.Provider_role_not_found, roleName)); } throw new ProviderException(SR.GetString(SR.Provider_unknown_failure)); } finally { if( holder != null ) { holder.Close(); holder = null; } } } catch { throw; } } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// public override string [] GetRolesForUser(string username) { SecUtility.CheckParameter(ref username, true, false, true, 256, "username"); if (username.Length < 1) return new string[0]; try { SqlConnectionHolder holder = null; try { holder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true); CheckSchemaVersion( holder.Connection ); SqlCommand cmd = new SqlCommand("dbo.aspnet_UsersInRoles_GetRolesForUser", holder.Connection); SqlParameter p = new SqlParameter("@ReturnValue", SqlDbType.Int); SqlDataReader reader = null; StringCollection sc = new StringCollection(); cmd.CommandType = CommandType.StoredProcedure; cmd.CommandTimeout = CommandTimeout; p.Direction = ParameterDirection.ReturnValue; cmd.Parameters.Add(p); cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName)); cmd.Parameters.Add(CreateInputParam("@UserName", SqlDbType.NVarChar, username)); try { reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess); while (reader.Read()) sc.Add(reader.GetString(0)); } catch { throw; } finally { if (reader != null) reader.Close(); } if (sc.Count > 0) { String [] strReturn = new String[sc.Count]; sc.CopyTo(strReturn, 0); return strReturn; } switch(GetReturnValue(cmd)) { case 0: return new string[0]; case 1: return new string[0]; //throw new ProviderException(SR.GetString(SR.Provider_user_not_found)); default: throw new ProviderException(SR.GetString(SR.Provider_unknown_failure)); } } finally { if( holder != null ) { holder.Close(); holder = null; } } } catch { throw; } } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// public override void CreateRole(string roleName) { SecUtility.CheckParameter(ref roleName, true, true, true, 256, "roleName"); try { SqlConnectionHolder holder = null; try { holder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true); CheckSchemaVersion(holder.Connection); SqlCommand cmd = new SqlCommand("dbo.aspnet_Roles_CreateRole", holder.Connection); cmd.CommandType = CommandType.StoredProcedure; cmd.CommandTimeout = CommandTimeout; SqlParameter p = new SqlParameter("@ReturnValue", SqlDbType.Int); p.Direction = ParameterDirection.ReturnValue; cmd.Parameters.Add(p); cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName)); cmd.Parameters.Add(CreateInputParam("@RoleName", SqlDbType.NVarChar, roleName)); cmd.ExecuteNonQuery(); int returnValue = GetReturnValue(cmd); switch (returnValue) { case 0 : return; case 1 : throw new ProviderException(SR.GetString(SR.Provider_role_already_exists, roleName)); default : throw new ProviderException(SR.GetString(SR.Provider_unknown_failure)); } } finally { if( holder != null ) { holder.Close(); holder = null; } } } catch { throw; } } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// public override bool DeleteRole(string roleName, bool throwOnPopulatedRole) { SecUtility.CheckParameter(ref roleName, true, true, true, 256, "roleName"); try { SqlConnectionHolder holder = null; try { holder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true); CheckSchemaVersion( holder.Connection ); SqlCommand cmd = new SqlCommand("dbo.aspnet_Roles_DeleteRole", holder.Connection); cmd.CommandType = CommandType.StoredProcedure; cmd.CommandTimeout = CommandTimeout; SqlParameter p = new SqlParameter("@ReturnValue", SqlDbType.Int); p.Direction = ParameterDirection.ReturnValue; cmd.Parameters.Add(p); cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName)); cmd.Parameters.Add(CreateInputParam("@RoleName", SqlDbType.NVarChar, roleName)); cmd.Parameters.Add(CreateInputParam("@DeleteOnlyIfRoleIsEmpty", SqlDbType.Bit, throwOnPopulatedRole ? 1 : 0)); cmd.ExecuteNonQuery(); int returnValue = GetReturnValue(cmd); if( returnValue == 2 ) { throw new ProviderException(SR.GetString(SR.Role_is_not_empty)); } return ( returnValue == 0 ); } finally { if( holder != null ) { holder.Close(); holder = null; } } } catch { throw; } } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// public override bool RoleExists(string roleName) { SecUtility.CheckParameter( ref roleName, true, true, true, 256, "roleName" ); try { SqlConnectionHolder holder = null; try { holder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true); CheckSchemaVersion( holder.Connection ); SqlCommand cmd = new SqlCommand("dbo.aspnet_Roles_RoleExists", holder.Connection); cmd.CommandType = CommandType.StoredProcedure; cmd.CommandTimeout = CommandTimeout; SqlParameter p = new SqlParameter("@ReturnValue", SqlDbType.Int); p.Direction = ParameterDirection.ReturnValue; cmd.Parameters.Add(p); cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName)); cmd.Parameters.Add(CreateInputParam("@RoleName", SqlDbType.NVarChar, roleName)); cmd.ExecuteNonQuery(); int returnValue = GetReturnValue(cmd); switch(returnValue) { case 0: return false; case 1: return true; } throw new ProviderException(SR.GetString(SR.Provider_unknown_failure)); } finally { if( holder != null ) { holder.Close(); holder = null; } } } catch { throw; } } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// public override void AddUsersToRoles(string[] usernames, string[] roleNames) { SecUtility.CheckArrayParameter(ref roleNames, true, true, true, 256, "roleNames"); SecUtility.CheckArrayParameter(ref usernames, true, true, true, 256, "usernames"); bool beginTranCalled = false; try { SqlConnectionHolder holder = null; try { holder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true); CheckSchemaVersion(holder.Connection); int numUsersRemaing = usernames.Length; while (numUsersRemaing > 0) { int iter; string allUsers = usernames[usernames.Length - numUsersRemaing]; numUsersRemaing--; for (iter = usernames.Length - numUsersRemaing; iter < usernames.Length; iter++) { if (allUsers.Length + usernames[iter].Length + 1 >= 4000) break; allUsers += "," + usernames[iter]; numUsersRemaing--; } int numRolesRemaining = roleNames.Length; while (numRolesRemaining > 0) { string allRoles = roleNames[roleNames.Length - numRolesRemaining]; numRolesRemaining--; for (iter = roleNames.Length - numRolesRemaining; iter < roleNames.Length; iter++) { if (allRoles.Length + roleNames[iter].Length + 1 >= 4000) break; allRoles += "," + roleNames[iter]; numRolesRemaining--; } if (!beginTranCalled && (numUsersRemaing > 0 || numRolesRemaining > 0)) { (new SqlCommand("BEGIN TRANSACTION", holder.Connection)).ExecuteNonQuery(); beginTranCalled = true; } AddUsersToRolesCore(holder.Connection, allUsers, allRoles); } } if (beginTranCalled) { (new SqlCommand("COMMIT TRANSACTION", holder.Connection)).ExecuteNonQuery(); beginTranCalled = false; } } catch { if (beginTranCalled) { try { (new SqlCommand("ROLLBACK TRANSACTION", holder.Connection)).ExecuteNonQuery(); } catch { } beginTranCalled = false; } throw; } finally { if( holder != null ) { holder.Close(); holder = null; } } } catch { throw; } } private void AddUsersToRolesCore(SqlConnection conn, string usernames, string roleNames) { SqlCommand cmd = new SqlCommand("dbo.aspnet_UsersInRoles_AddUsersToRoles", conn); SqlDataReader reader = null; SqlParameter p = new SqlParameter("@ReturnValue", SqlDbType.Int); string s1 = String.Empty, s2 = String.Empty; cmd.CommandType = CommandType.StoredProcedure; cmd.CommandTimeout = CommandTimeout; p.Direction = ParameterDirection.ReturnValue; cmd.Parameters.Add(p); cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName)); cmd.Parameters.Add(CreateInputParam("@RoleNames", SqlDbType.NVarChar, roleNames)); cmd.Parameters.Add(CreateInputParam("@UserNames", SqlDbType.NVarChar, usernames)); cmd.Parameters.Add(CreateInputParam("@CurrentTimeUtc", SqlDbType.DateTime, DateTime.UtcNow)); try { reader = cmd.ExecuteReader(CommandBehavior.SingleRow); if (reader.Read()) { if (reader.FieldCount > 0) s1 = reader.GetString(0); if (reader.FieldCount > 1) s2 = reader.GetString(1); } } finally { if (reader != null) reader.Close(); } switch(GetReturnValue(cmd)) { case 0: return; case 1: throw new ProviderException(SR.GetString(SR.Provider_this_user_not_found, s1)); case 2: throw new ProviderException(SR.GetString(SR.Provider_role_not_found, s1)); case 3: throw new ProviderException(SR.GetString(SR.Provider_this_user_already_in_role, s1, s2)); } throw new ProviderException(SR.GetString(SR.Provider_unknown_failure)); } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// public override void RemoveUsersFromRoles(string[] usernames, string[] roleNames) { SecUtility.CheckArrayParameter(ref roleNames, true, true, true, 256, "roleNames"); SecUtility.CheckArrayParameter(ref usernames, true, true, true, 256, "usernames"); bool beginTranCalled = false; try { SqlConnectionHolder holder = null; try { holder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true); CheckSchemaVersion( holder.Connection ); int numUsersRemaing = usernames.Length; while (numUsersRemaing > 0) { int iter; string allUsers = usernames[usernames.Length - numUsersRemaing]; numUsersRemaing--; for (iter = usernames.Length - numUsersRemaing; iter < usernames.Length; iter++) { if (allUsers.Length + usernames[iter].Length + 1 >= 4000) break; allUsers += "," + usernames[iter]; numUsersRemaing--; } int numRolesRemaining = roleNames.Length; while (numRolesRemaining > 0) { string allRoles = roleNames[roleNames.Length - numRolesRemaining]; numRolesRemaining--; for (iter = roleNames.Length - numRolesRemaining; iter < roleNames.Length; iter++) { if (allRoles.Length + roleNames[iter].Length + 1 >= 4000) break; allRoles += "," + roleNames[iter]; numRolesRemaining--; } if (!beginTranCalled && (numUsersRemaing > 0 || numRolesRemaining > 0)) { (new SqlCommand("BEGIN TRANSACTION", holder.Connection)).ExecuteNonQuery(); beginTranCalled = true; } RemoveUsersFromRolesCore(holder.Connection, allUsers, allRoles); } } if (beginTranCalled) { (new SqlCommand("COMMIT TRANSACTION", holder.Connection)).ExecuteNonQuery(); beginTranCalled = false; } } catch { if (beginTranCalled) { (new SqlCommand("ROLLBACK TRANSACTION", holder.Connection)).ExecuteNonQuery(); beginTranCalled = false; } throw; } finally { if( holder != null ) { holder.Close(); holder = null; } } } catch { throw; } } private void RemoveUsersFromRolesCore(SqlConnection conn, string usernames, string roleNames) { SqlCommand cmd = new SqlCommand("dbo.aspnet_UsersInRoles_RemoveUsersFromRoles", conn); SqlDataReader reader = null; SqlParameter p = new SqlParameter("@ReturnValue", SqlDbType.Int); string s1 = String.Empty, s2 = String.Empty; cmd.CommandType = CommandType.StoredProcedure; cmd.CommandTimeout = CommandTimeout; p.Direction = ParameterDirection.ReturnValue; cmd.Parameters.Add(p); cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName)); cmd.Parameters.Add(CreateInputParam("@UserNames", SqlDbType.NVarChar, usernames)); cmd.Parameters.Add(CreateInputParam("@RoleNames", SqlDbType.NVarChar, roleNames)); try { reader = cmd.ExecuteReader(CommandBehavior.SingleRow); if (reader.Read()) { if (reader.FieldCount > 0) s1 = reader.GetString(0); if (reader.FieldCount > 1) s2 = reader.GetString(1); } } finally { if (reader != null) reader.Close(); } switch (GetReturnValue(cmd)) { case 0: return; case 1: throw new ProviderException(SR.GetString(SR.Provider_this_user_not_found, s1)); case 2: throw new ProviderException(SR.GetString(SR.Provider_role_not_found, s2)); case 3: throw new ProviderException(SR.GetString(SR.Provider_this_user_already_not_in_role, s1, s2)); } throw new ProviderException(SR.GetString(SR.Provider_unknown_failure)); } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// public override string [] GetUsersInRole(string roleName) { SecUtility.CheckParameter(ref roleName, true, true, true, 256, "roleName"); try { SqlConnectionHolder holder = null; try { holder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true); CheckSchemaVersion( holder.Connection ); SqlCommand cmd = new SqlCommand("dbo.aspnet_UsersInRoles_GetUsersInRoles", holder.Connection); SqlDataReader reader = null; SqlParameter p = new SqlParameter("@ReturnValue", SqlDbType.Int); StringCollection sc = new StringCollection(); cmd.CommandType = CommandType.StoredProcedure; cmd.CommandTimeout = CommandTimeout; p.Direction = ParameterDirection.ReturnValue; cmd.Parameters.Add(p); cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName)); cmd.Parameters.Add(CreateInputParam("@RoleName", SqlDbType.NVarChar, roleName)); try { reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess); while (reader.Read()) sc.Add(reader.GetString(0)); } catch { throw; } finally { if (reader != null) reader.Close(); } if (sc.Count < 1) { switch(GetReturnValue(cmd)) { case 0: return new string[0]; case 1: throw new ProviderException(SR.GetString(SR.Provider_role_not_found, roleName)); } throw new ProviderException(SR.GetString(SR.Provider_unknown_failure)); } String [] strReturn = new String[sc.Count]; sc.CopyTo(strReturn, 0); return strReturn; } finally { if( holder != null ) { holder.Close(); holder = null; } } } catch { throw; } } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// public override string [] GetAllRoles(){ try { SqlConnectionHolder holder = null; try { holder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true); CheckSchemaVersion( holder.Connection ); SqlCommand cmd = new SqlCommand("dbo.aspnet_Roles_GetAllRoles", holder.Connection); StringCollection sc = new StringCollection(); SqlParameter p = new SqlParameter("@ReturnValue", SqlDbType.Int); SqlDataReader reader = null; cmd.CommandType = CommandType.StoredProcedure; cmd.CommandTimeout = CommandTimeout; p.Direction = ParameterDirection.ReturnValue; cmd.Parameters.Add(p); cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName)); try { reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess); while (reader.Read()) sc.Add(reader.GetString(0)); } catch { throw; } finally { if (reader != null) reader.Close(); } String [] strReturn = new String [sc.Count]; sc.CopyTo(strReturn, 0); return strReturn; } finally { if( holder != null ) { holder.Close(); holder = null; } } } catch { throw; } } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// public override string[] FindUsersInRole(string roleName, string usernameToMatch) { SecUtility.CheckParameter(ref roleName, true, true, true, 256, "roleName"); SecUtility.CheckParameter(ref usernameToMatch, true, true, false, 256, "usernameToMatch"); try { SqlConnectionHolder holder = null; try { holder = SqlConnectionHelper.GetConnection(_sqlConnectionString, true); CheckSchemaVersion( holder.Connection ); SqlCommand cmd = new SqlCommand("dbo.aspnet_UsersInRoles_FindUsersInRole", holder.Connection); SqlDataReader reader = null; SqlParameter p = new SqlParameter("@ReturnValue", SqlDbType.Int); StringCollection sc = new StringCollection(); cmd.CommandType = CommandType.StoredProcedure; cmd.CommandTimeout = CommandTimeout; p.Direction = ParameterDirection.ReturnValue; cmd.Parameters.Add(p); cmd.Parameters.Add(CreateInputParam("@ApplicationName", SqlDbType.NVarChar, ApplicationName)); cmd.Parameters.Add(CreateInputParam("@RoleName", SqlDbType.NVarChar, roleName)); cmd.Parameters.Add(CreateInputParam("@UserNameToMatch", SqlDbType.NVarChar, usernameToMatch)); try { reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess); while (reader.Read()) sc.Add(reader.GetString(0)); } catch { throw; } finally { if (reader != null) reader.Close(); } if (sc.Count < 1) { switch (GetReturnValue(cmd)) { case 0: return new string[0]; case 1: throw new ProviderException(SR.GetString(SR.Provider_role_not_found, roleName)); default: throw new ProviderException(SR.GetString(SR.Provider_unknown_failure)); } } String[] strReturn = new String[sc.Count]; sc.CopyTo(strReturn, 0); return strReturn; } finally { if( holder != null ) { holder.Close(); holder = null; } } } catch { throw; } } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// public override string ApplicationName { get { return _AppName; } set { _AppName = value; if ( _AppName.Length > 256 ) { throw new ProviderException( SR.GetString( SR.Provider_application_name_too_long ) ); } } } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// private SqlParameter CreateInputParam(string paramName, SqlDbType dbType, object objValue){ SqlParameter param = new SqlParameter(paramName, dbType); if (objValue == null) objValue = String.Empty; param.Value = objValue; return param; } ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////// private int GetReturnValue(SqlCommand cmd) { foreach(SqlParameter param in cmd.Parameters){ if (param.Direction == ParameterDirection.ReturnValue && param.Value != null && param.Value is int) return (int) param.Value; } return -1; } } }[To be supplied.] ///
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