562 Zeilen
18 KiB
PHP
562 Zeilen
18 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Auth
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* @subpackage Adapter
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/**
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* @see Zend_Auth_Adapter_Interface
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*/
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require_once 'Zend/Auth/Adapter/Interface.php';
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/**
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* @see Zend_Db_Adapter_Abstract
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*/
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require_once 'Zend/Db/Adapter/Abstract.php';
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/**
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* @see Zend_Auth_Result
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*/
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require_once 'Zend/Auth/Result.php';
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/**
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* @category Zend
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* @package Zend_Auth
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* @subpackage Adapter
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Auth_Adapter_DbTable implements Zend_Auth_Adapter_Interface
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{
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/**
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* Database Connection
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*
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* @var Zend_Db_Adapter_Abstract
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*/
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protected $_zendDb = null;
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/**
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* @var Zend_Db_Select
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*/
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protected $_dbSelect = null;
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/**
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* $_tableName - the table name to check
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*
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* @var string
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*/
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protected $_tableName = null;
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/**
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* $_identityColumn - the column to use as the identity
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*
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* @var string
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*/
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protected $_identityColumn = null;
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/**
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* $_credentialColumns - columns to be used as the credentials
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*
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* @var string
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*/
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protected $_credentialColumn = null;
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/**
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* $_identity - Identity value
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*
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* @var string
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*/
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protected $_identity = null;
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/**
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* $_credential - Credential values
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*
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* @var string
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*/
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protected $_credential = null;
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/**
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* $_credentialTreatment - Treatment applied to the credential, such as MD5() or PASSWORD()
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*
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* @var string
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*/
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protected $_credentialTreatment = null;
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/**
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* $_authenticateResultInfo
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*
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* @var array
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*/
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protected $_authenticateResultInfo = null;
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/**
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* $_resultRow - Results of database authentication query
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*
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* @var array
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*/
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protected $_resultRow = null;
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/**
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* $_ambiguityIdentity - Flag to indicate same Identity can be used with
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* different credentials. Default is FALSE and need to be set to true to
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* allow ambiguity usage.
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*
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* @var boolean
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*/
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protected $_ambiguityIdentity = false;
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/**
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* __construct() - Sets configuration options
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*
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* @param Zend_Db_Adapter_Abstract $zendDb If null, default database adapter assumed
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* @param string $tableName
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* @param string $identityColumn
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* @param string $credentialColumn
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* @param string $credentialTreatment
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* @return void
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*/
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public function __construct(Zend_Db_Adapter_Abstract $zendDb = null, $tableName = null, $identityColumn = null,
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$credentialColumn = null, $credentialTreatment = null)
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{
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$this->_setDbAdapter($zendDb);
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if (null !== $tableName) {
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$this->setTableName($tableName);
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}
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if (null !== $identityColumn) {
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$this->setIdentityColumn($identityColumn);
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}
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if (null !== $credentialColumn) {
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$this->setCredentialColumn($credentialColumn);
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}
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if (null !== $credentialTreatment) {
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$this->setCredentialTreatment($credentialTreatment);
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}
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}
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/**
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* _setDbAdapter() - set the database adapter to be used for quering
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*
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* @param Zend_Db_Adapter_Abstract
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* @throws Zend_Auth_Adapter_Exception
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* @return Zend_Auth_Adapter_DbTable
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*/
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protected function _setDbAdapter(Zend_Db_Adapter_Abstract $zendDb = null)
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{
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$this->_zendDb = $zendDb;
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/**
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* If no adapter is specified, fetch default database adapter.
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*/
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if(null === $this->_zendDb) {
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require_once 'Zend/Db/Table/Abstract.php';
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$this->_zendDb = Zend_Db_Table_Abstract::getDefaultAdapter();
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if (null === $this->_zendDb) {
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require_once 'Zend/Auth/Adapter/Exception.php';
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throw new Zend_Auth_Adapter_Exception('No database adapter present');
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}
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}
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return $this;
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}
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/**
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* setTableName() - set the table name to be used in the select query
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*
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* @param string $tableName
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* @return Zend_Auth_Adapter_DbTable Provides a fluent interface
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*/
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public function setTableName($tableName)
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{
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$this->_tableName = $tableName;
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return $this;
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}
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/**
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* setIdentityColumn() - set the column name to be used as the identity column
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*
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* @param string $identityColumn
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* @return Zend_Auth_Adapter_DbTable Provides a fluent interface
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*/
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public function setIdentityColumn($identityColumn)
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{
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$this->_identityColumn = $identityColumn;
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return $this;
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}
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/**
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* setCredentialColumn() - set the column name to be used as the credential column
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*
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* @param string $credentialColumn
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* @return Zend_Auth_Adapter_DbTable Provides a fluent interface
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*/
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public function setCredentialColumn($credentialColumn)
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{
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$this->_credentialColumn = $credentialColumn;
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return $this;
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}
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/**
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* setCredentialTreatment() - allows the developer to pass a parameterized string that is
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* used to transform or treat the input credential data.
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*
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* In many cases, passwords and other sensitive data are encrypted, hashed, encoded,
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* obscured, or otherwise treated through some function or algorithm. By specifying a
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* parameterized treatment string with this method, a developer may apply arbitrary SQL
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* upon input credential data.
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*
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* Examples:
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*
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* 'PASSWORD(?)'
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* 'MD5(?)'
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*
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* @param string $treatment
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* @return Zend_Auth_Adapter_DbTable Provides a fluent interface
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*/
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public function setCredentialTreatment($treatment)
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{
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$this->_credentialTreatment = $treatment;
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return $this;
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}
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/**
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* setIdentity() - set the value to be used as the identity
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*
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* @param string $value
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* @return Zend_Auth_Adapter_DbTable Provides a fluent interface
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*/
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public function setIdentity($value)
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{
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$this->_identity = $value;
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return $this;
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}
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/**
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* setCredential() - set the credential value to be used, optionally can specify a treatment
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* to be used, should be supplied in parameterized form, such as 'MD5(?)' or 'PASSWORD(?)'
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*
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* @param string $credential
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* @return Zend_Auth_Adapter_DbTable Provides a fluent interface
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*/
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public function setCredential($credential)
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{
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$this->_credential = $credential;
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return $this;
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}
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/**
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* setAmbiguityIdentity() - sets a flag for usage of identical identities
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* with unique credentials. It accepts integers (0, 1) or boolean (true,
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* false) parameters. Default is false.
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*
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* @param int|bool $flag
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* @return Zend_Auth_Adapter_DbTable
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*/
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public function setAmbiguityIdentity($flag)
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{
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if (is_integer($flag)) {
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$this->_ambiguityIdentity = (1 === $flag ? true : false);
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} elseif (is_bool($flag)) {
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$this->_ambiguityIdentity = $flag;
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}
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return $this;
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}
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/**
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* getAmbiguityIdentity() - returns TRUE for usage of multiple identical
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* identies with different credentials, FALSE if not used.
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*
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* @return bool
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*/
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public function getAmbiguityIdentity()
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{
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return $this->_ambiguityIdentity;
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}
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/**
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* getDbSelect() - Return the preauthentication Db Select object for userland select query modification
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*
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* @return Zend_Db_Select
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*/
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public function getDbSelect()
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{
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if ($this->_dbSelect == null) {
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$this->_dbSelect = $this->_zendDb->select();
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}
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return $this->_dbSelect;
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}
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/**
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* getResultRowObject() - Returns the result row as a stdClass object
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*
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* @param string|array $returnColumns
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* @param string|array $omitColumns
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* @return stdClass|boolean
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*/
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public function getResultRowObject($returnColumns = null, $omitColumns = null)
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{
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if (!$this->_resultRow) {
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return false;
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}
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$returnObject = new stdClass();
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if (null !== $returnColumns) {
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$availableColumns = array_keys($this->_resultRow);
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foreach ( (array) $returnColumns as $returnColumn) {
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if (in_array($returnColumn, $availableColumns)) {
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$returnObject->{$returnColumn} = $this->_resultRow[$returnColumn];
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}
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}
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return $returnObject;
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} elseif (null !== $omitColumns) {
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$omitColumns = (array) $omitColumns;
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foreach ($this->_resultRow as $resultColumn => $resultValue) {
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if (!in_array($resultColumn, $omitColumns)) {
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$returnObject->{$resultColumn} = $resultValue;
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}
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}
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return $returnObject;
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} else {
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foreach ($this->_resultRow as $resultColumn => $resultValue) {
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$returnObject->{$resultColumn} = $resultValue;
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}
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return $returnObject;
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}
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}
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/**
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* authenticate() - defined by Zend_Auth_Adapter_Interface. This method is called to
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* attempt an authentication. Previous to this call, this adapter would have already
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* been configured with all necessary information to successfully connect to a database
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* table and attempt to find a record matching the provided identity.
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*
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* @throws Zend_Auth_Adapter_Exception if answering the authentication query is impossible
|
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* @return Zend_Auth_Result
|
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*/
|
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public function authenticate()
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{
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$this->_authenticateSetup();
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$dbSelect = $this->_authenticateCreateSelect();
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$resultIdentities = $this->_authenticateQuerySelect($dbSelect);
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if ( ($authResult = $this->_authenticateValidateResultSet($resultIdentities)) instanceof Zend_Auth_Result) {
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return $authResult;
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}
|
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|
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if (true === $this->getAmbiguityIdentity()) {
|
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$validIdentities = array ();
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$zendAuthCredentialMatchColumn = $this->_zendDb->foldCase('zend_auth_credential_match');
|
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foreach ($resultIdentities as $identity) {
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if (1 === (int) $identity[$zendAuthCredentialMatchColumn]) {
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$validIdentities[] = $identity;
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}
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}
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$resultIdentities = $validIdentities;
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}
|
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$authResult = $this->_authenticateValidateResult(array_shift($resultIdentities));
|
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return $authResult;
|
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}
|
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|
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|
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|
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/**
|
||
|
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* _authenticateSetup() - This method abstracts the steps involved with
|
||
|
|
* making sure that this adapter was indeed setup properly with all
|
||
|
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* required pieces of information.
|
||
|
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*
|
||
|
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* @throws Zend_Auth_Adapter_Exception - in the event that setup was not done properly
|
||
|
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* @return true
|
||
|
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*/
|
||
|
|
protected function _authenticateSetup()
|
||
|
|
{
|
||
|
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$exception = null;
|
||
|
|
|
||
|
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if ($this->_tableName == '') {
|
||
|
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$exception = 'A table must be supplied for the Zend_Auth_Adapter_DbTable authentication adapter.';
|
||
|
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} elseif ($this->_identityColumn == '') {
|
||
|
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$exception = 'An identity column must be supplied for the Zend_Auth_Adapter_DbTable authentication adapter.';
|
||
|
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} elseif ($this->_credentialColumn == '') {
|
||
|
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$exception = 'A credential column must be supplied for the Zend_Auth_Adapter_DbTable authentication adapter.';
|
||
|
|
} elseif ($this->_identity == '') {
|
||
|
|
$exception = 'A value for the identity was not provided prior to authentication with Zend_Auth_Adapter_DbTable.';
|
||
|
|
} elseif ($this->_credential === null) {
|
||
|
|
$exception = 'A credential value was not provided prior to authentication with Zend_Auth_Adapter_DbTable.';
|
||
|
|
}
|
||
|
|
|
||
|
|
if (null !== $exception) {
|
||
|
|
/**
|
||
|
|
* @see Zend_Auth_Adapter_Exception
|
||
|
|
*/
|
||
|
|
require_once 'Zend/Auth/Adapter/Exception.php';
|
||
|
|
throw new Zend_Auth_Adapter_Exception($exception);
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->_authenticateResultInfo = array(
|
||
|
|
'code' => Zend_Auth_Result::FAILURE,
|
||
|
|
'identity' => $this->_identity,
|
||
|
|
'messages' => array()
|
||
|
|
);
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _authenticateCreateSelect() - This method creates a Zend_Db_Select object that
|
||
|
|
* is completely configured to be queried against the database.
|
||
|
|
*
|
||
|
|
* @return Zend_Db_Select
|
||
|
|
*/
|
||
|
|
protected function _authenticateCreateSelect()
|
||
|
|
{
|
||
|
|
// build credential expression
|
||
|
|
if (empty($this->_credentialTreatment) || (strpos($this->_credentialTreatment, '?') === false)) {
|
||
|
|
$this->_credentialTreatment = '?';
|
||
|
|
}
|
||
|
|
|
||
|
|
$credentialExpression = new Zend_Db_Expr(
|
||
|
|
'(CASE WHEN ' .
|
||
|
|
$this->_zendDb->quoteInto(
|
||
|
|
$this->_zendDb->quoteIdentifier($this->_credentialColumn, true)
|
||
|
|
. ' = ' . $this->_credentialTreatment, $this->_credential
|
||
|
|
)
|
||
|
|
. ' THEN 1 ELSE 0 END) AS '
|
||
|
|
. $this->_zendDb->quoteIdentifier(
|
||
|
|
$this->_zendDb->foldCase('zend_auth_credential_match')
|
||
|
|
)
|
||
|
|
);
|
||
|
|
|
||
|
|
// get select
|
||
|
|
$dbSelect = clone $this->getDbSelect();
|
||
|
|
$dbSelect->from($this->_tableName, array('*', $credentialExpression))
|
||
|
|
->where($this->_zendDb->quoteIdentifier($this->_identityColumn, true) . ' = ?', $this->_identity);
|
||
|
|
|
||
|
|
return $dbSelect;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _authenticateQuerySelect() - This method accepts a Zend_Db_Select object and
|
||
|
|
* performs a query against the database with that object.
|
||
|
|
*
|
||
|
|
* @param Zend_Db_Select $dbSelect
|
||
|
|
* @throws Zend_Auth_Adapter_Exception - when an invalid select
|
||
|
|
* object is encountered
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
protected function _authenticateQuerySelect(Zend_Db_Select $dbSelect)
|
||
|
|
{
|
||
|
|
try {
|
||
|
|
if ($this->_zendDb->getFetchMode() != Zend_DB::FETCH_ASSOC) {
|
||
|
|
$origDbFetchMode = $this->_zendDb->getFetchMode();
|
||
|
|
$this->_zendDb->setFetchMode(Zend_DB::FETCH_ASSOC);
|
||
|
|
}
|
||
|
|
$resultIdentities = $this->_zendDb->fetchAll($dbSelect->__toString());
|
||
|
|
if (isset($origDbFetchMode)) {
|
||
|
|
$this->_zendDb->setFetchMode($origDbFetchMode);
|
||
|
|
unset($origDbFetchMode);
|
||
|
|
}
|
||
|
|
} catch (Exception $e) {
|
||
|
|
/**
|
||
|
|
* @see Zend_Auth_Adapter_Exception
|
||
|
|
*/
|
||
|
|
require_once 'Zend/Auth/Adapter/Exception.php';
|
||
|
|
throw new Zend_Auth_Adapter_Exception('The supplied parameters to Zend_Auth_Adapter_DbTable failed to '
|
||
|
|
. 'produce a valid sql statement, please check table and column names '
|
||
|
|
. 'for validity.', 0, $e);
|
||
|
|
}
|
||
|
|
return $resultIdentities;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _authenticateValidateResultSet() - This method attempts to make
|
||
|
|
* certain that only one record was returned in the resultset
|
||
|
|
*
|
||
|
|
* @param array $resultIdentities
|
||
|
|
* @return true|Zend_Auth_Result
|
||
|
|
*/
|
||
|
|
protected function _authenticateValidateResultSet(array $resultIdentities)
|
||
|
|
{
|
||
|
|
|
||
|
|
if (count($resultIdentities) < 1) {
|
||
|
|
$this->_authenticateResultInfo['code'] = Zend_Auth_Result::FAILURE_IDENTITY_NOT_FOUND;
|
||
|
|
$this->_authenticateResultInfo['messages'][] = 'A record with the supplied identity could not be found.';
|
||
|
|
return $this->_authenticateCreateAuthResult();
|
||
|
|
} elseif (count($resultIdentities) > 1 && false === $this->getAmbiguityIdentity()) {
|
||
|
|
$this->_authenticateResultInfo['code'] = Zend_Auth_Result::FAILURE_IDENTITY_AMBIGUOUS;
|
||
|
|
$this->_authenticateResultInfo['messages'][] = 'More than one record matches the supplied identity.';
|
||
|
|
return $this->_authenticateCreateAuthResult();
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _authenticateValidateResult() - This method attempts to validate that
|
||
|
|
* the record in the resultset is indeed a record that matched the
|
||
|
|
* identity provided to this adapter.
|
||
|
|
*
|
||
|
|
* @param array $resultIdentity
|
||
|
|
* @return Zend_Auth_Result
|
||
|
|
*/
|
||
|
|
protected function _authenticateValidateResult($resultIdentity)
|
||
|
|
{
|
||
|
|
$zendAuthCredentialMatchColumn = $this->_zendDb->foldCase('zend_auth_credential_match');
|
||
|
|
|
||
|
|
if ($resultIdentity[$zendAuthCredentialMatchColumn] != '1') {
|
||
|
|
$this->_authenticateResultInfo['code'] = Zend_Auth_Result::FAILURE_CREDENTIAL_INVALID;
|
||
|
|
$this->_authenticateResultInfo['messages'][] = 'Supplied credential is invalid.';
|
||
|
|
return $this->_authenticateCreateAuthResult();
|
||
|
|
}
|
||
|
|
|
||
|
|
unset($resultIdentity[$zendAuthCredentialMatchColumn]);
|
||
|
|
$this->_resultRow = $resultIdentity;
|
||
|
|
|
||
|
|
$this->_authenticateResultInfo['code'] = Zend_Auth_Result::SUCCESS;
|
||
|
|
$this->_authenticateResultInfo['messages'][] = 'Authentication successful.';
|
||
|
|
return $this->_authenticateCreateAuthResult();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* _authenticateCreateAuthResult() - Creates a Zend_Auth_Result object from
|
||
|
|
* the information that has been collected during the authenticate() attempt.
|
||
|
|
*
|
||
|
|
* @return Zend_Auth_Result
|
||
|
|
*/
|
||
|
|
protected function _authenticateCreateAuthResult()
|
||
|
|
{
|
||
|
|
return new Zend_Auth_Result(
|
||
|
|
$this->_authenticateResultInfo['code'],
|
||
|
|
$this->_authenticateResultInfo['identity'],
|
||
|
|
$this->_authenticateResultInfo['messages']
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|