541 行
无行尾
10 KiB
PHP
541 行
无行尾
10 KiB
PHP
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP 5.1.6 or newer
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*
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* @package CodeIgniter
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* @author ExpressionEngine Dev Team
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* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
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* @license http://codeigniter.com/user_guide/license.html
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* @link http://codeigniter.com
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* @since Version 1.0
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* @filesource
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*/
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// ------------------------------------------------------------------------
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/**
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* User Agent Class
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*
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* Identifies the platform, browser, robot, or mobile devise of the browsing agent
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*
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* @package CodeIgniter
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* @subpackage Libraries
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* @category User Agent
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* @author ExpressionEngine Dev Team
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* @link http://codeigniter.com/user_guide/libraries/user_agent.html
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*/
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class CI_User_agent {
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var $agent = NULL;
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var $is_browser = FALSE;
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var $is_robot = FALSE;
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var $is_mobile = FALSE;
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var $languages = array();
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var $charsets = array();
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var $platforms = array();
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var $browsers = array();
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var $mobiles = array();
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var $robots = array();
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var $platform = '';
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var $browser = '';
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var $version = '';
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var $mobile = '';
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var $robot = '';
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/**
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* Constructor
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*
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* Sets the User Agent and runs the compilation routine
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*
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* @access public
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* @return void
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*/
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public function __construct()
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{
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if (isset($_SERVER['HTTP_USER_AGENT']))
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{
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$this->agent = trim($_SERVER['HTTP_USER_AGENT']);
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}
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if ( ! is_null($this->agent))
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{
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if ($this->_load_agent_file())
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{
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$this->_compile_data();
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}
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}
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log_message('debug', "User Agent Class Initialized");
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}
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// --------------------------------------------------------------------
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/**
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* Compile the User Agent Data
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*
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* @access private
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* @return bool
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*/
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private function _load_agent_file()
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{
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if ( ! @include(APPPATH.'config/user_agents'.EXT))
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{
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return FALSE;
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}
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$return = FALSE;
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if (isset($platforms))
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{
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$this->platforms = $platforms;
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unset($platforms);
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$return = TRUE;
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}
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if (isset($browsers))
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{
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$this->browsers = $browsers;
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unset($browsers);
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$return = TRUE;
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}
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if (isset($mobiles))
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{
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$this->mobiles = $mobiles;
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unset($mobiles);
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$return = TRUE;
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}
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if (isset($robots))
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{
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$this->robots = $robots;
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unset($robots);
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$return = TRUE;
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}
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return $return;
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}
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// --------------------------------------------------------------------
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/**
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* Compile the User Agent Data
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*
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* @access private
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* @return bool
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*/
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private function _compile_data()
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{
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$this->_set_platform();
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foreach (array('_set_browser', '_set_robot', '_set_mobile') as $function)
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{
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if ($this->$function() === TRUE)
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{
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break;
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}
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}
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}
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// --------------------------------------------------------------------
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/**
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* Set the Platform
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*
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* @access private
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* @return mixed
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*/
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private function _set_platform()
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{
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if (is_array($this->platforms) AND count($this->platforms) > 0)
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{
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foreach ($this->platforms as $key => $val)
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{
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if (preg_match("|".preg_quote($key)."|i", $this->agent))
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{
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$this->platform = $val;
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return TRUE;
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}
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}
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}
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$this->platform = 'Unknown Platform';
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}
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// --------------------------------------------------------------------
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/**
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* Set the Browser
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*
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* @access private
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* @return bool
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*/
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private function _set_browser()
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{
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if (is_array($this->browsers) AND count($this->browsers) > 0)
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{
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foreach ($this->browsers as $key => $val)
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{
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if (preg_match("|".preg_quote($key).".*?([0-9\.]+)|i", $this->agent, $match))
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{
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$this->is_browser = TRUE;
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$this->version = $match[1];
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$this->browser = $val;
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$this->_set_mobile();
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return TRUE;
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}
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}
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}
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return FALSE;
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}
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// --------------------------------------------------------------------
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/**
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* Set the Robot
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*
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* @access private
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* @return bool
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*/
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private function _set_robot()
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{
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if (is_array($this->robots) AND count($this->robots) > 0)
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{
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foreach ($this->robots as $key => $val)
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{
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if (preg_match("|".preg_quote($key)."|i", $this->agent))
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{
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$this->is_robot = TRUE;
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$this->robot = $val;
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return TRUE;
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}
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}
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}
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return FALSE;
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}
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// --------------------------------------------------------------------
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/**
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* Set the Mobile Device
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*
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* @access private
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* @return bool
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*/
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private function _set_mobile()
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{
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if (is_array($this->mobiles) AND count($this->mobiles) > 0)
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{
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foreach ($this->mobiles as $key => $val)
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{
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if (FALSE !== (strpos(strtolower($this->agent), $key)))
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{
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$this->is_mobile = TRUE;
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$this->mobile = $val;
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return TRUE;
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}
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}
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}
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return FALSE;
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}
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// --------------------------------------------------------------------
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/**
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* Set the accepted languages
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*
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* @access private
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* @return void
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*/
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private function _set_languages()
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{
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if ((count($this->languages) == 0) AND isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) AND $_SERVER['HTTP_ACCEPT_LANGUAGE'] != '')
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{
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$languages = preg_replace('/(;q=[0-9\.]+)/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_LANGUAGE'])));
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$this->languages = explode(',', $languages);
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}
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if (count($this->languages) == 0)
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{
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$this->languages = array('Undefined');
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}
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}
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// --------------------------------------------------------------------
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/**
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* Set the accepted character sets
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*
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* @access private
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* @return void
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*/
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private function _set_charsets()
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{
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if ((count($this->charsets) == 0) AND isset($_SERVER['HTTP_ACCEPT_CHARSET']) AND $_SERVER['HTTP_ACCEPT_CHARSET'] != '')
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{
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$charsets = preg_replace('/(;q=.+)/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_CHARSET'])));
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$this->charsets = explode(',', $charsets);
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}
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if (count($this->charsets) == 0)
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{
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$this->charsets = array('Undefined');
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}
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}
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// --------------------------------------------------------------------
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/**
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* Is Browser
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*
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* @access public
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* @return bool
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*/
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public function is_browser($key = NULL)
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{
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if ( ! $this->is_browser)
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{
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return FALSE;
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}
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// No need to be specific, it's a browser
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if ($key === NULL)
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{
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return TRUE;
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}
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// Check for a specific browser
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return array_key_exists($key, $this->browsers) AND $this->browser === $this->browsers[$key];
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}
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// --------------------------------------------------------------------
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/**
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* Is Robot
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*
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* @access public
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* @return bool
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*/
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public function is_robot($key = NULL)
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{
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if ( ! $this->is_robot)
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{
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return FALSE;
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}
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// No need to be specific, it's a robot
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if ($key === NULL)
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{
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return TRUE;
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}
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// Check for a specific robot
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return array_key_exists($key, $this->robots) AND $this->robot === $this->robots[$key];
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}
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// --------------------------------------------------------------------
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/**
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* Is Mobile
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*
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* @access public
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* @return bool
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*/
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public function is_mobile($key = NULL)
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{
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if ( ! $this->is_mobile)
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{
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return FALSE;
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}
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// No need to be specific, it's a mobile
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if ($key === NULL)
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{
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return TRUE;
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}
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// Check for a specific robot
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return array_key_exists($key, $this->mobiles) AND $this->mobile === $this->mobiles[$key];
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}
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// --------------------------------------------------------------------
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/**
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* Is this a referral from another site?
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*
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* @access public
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* @return bool
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*/
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public function is_referral()
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{
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if ( ! isset($_SERVER['HTTP_REFERER']) OR $_SERVER['HTTP_REFERER'] == '')
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{
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return FALSE;
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}
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return TRUE;
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}
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// --------------------------------------------------------------------
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/**
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* Agent String
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*
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* @access public
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* @return string
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*/
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public function agent_string()
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{
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return $this->agent;
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}
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// --------------------------------------------------------------------
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/**
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* Get Platform
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*
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* @access public
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* @return string
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*/
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public function platform()
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{
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return $this->platform;
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}
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// --------------------------------------------------------------------
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/**
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* Get Browser Name
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*
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* @access public
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* @return string
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*/
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public function browser()
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{
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return $this->browser;
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}
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// --------------------------------------------------------------------
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/**
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* Get the Browser Version
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*
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* @access public
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* @return string
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*/
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public function version()
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{
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return $this->version;
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}
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// --------------------------------------------------------------------
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/**
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* Get The Robot Name
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*
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* @access public
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* @return string
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*/
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public function robot()
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{
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return $this->robot;
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}
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// --------------------------------------------------------------------
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/**
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* Get the Mobile Device
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*
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* @access public
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* @return string
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*/
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public function mobile()
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{
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return $this->mobile;
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}
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// --------------------------------------------------------------------
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/**
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* Get the referrer
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*
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* @access public
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* @return bool
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*/
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public function referrer()
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{
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return ( ! isset($_SERVER['HTTP_REFERER']) OR $_SERVER['HTTP_REFERER'] == '') ? '' : trim($_SERVER['HTTP_REFERER']);
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}
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// --------------------------------------------------------------------
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/**
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* Get the accepted languages
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*
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* @access public
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* @return array
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*/
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public function languages()
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{
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if (count($this->languages) == 0)
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{
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$this->_set_languages();
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}
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return $this->languages;
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}
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// --------------------------------------------------------------------
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/**
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* Get the accepted Character Sets
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*
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* @access public
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* @return array
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*/
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public function charsets()
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{
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if (count($this->charsets) == 0)
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{
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$this->_set_charsets();
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}
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return $this->charsets;
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}
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// --------------------------------------------------------------------
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/**
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* Test for a particular language
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*
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* @access public
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* @return bool
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*/
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public function accept_lang($lang = 'en')
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{
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return (in_array(strtolower($lang), $this->languages(), TRUE));
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}
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// --------------------------------------------------------------------
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/**
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* Test for a particular character set
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*
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* @access public
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* @return bool
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*/
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public function accept_charset($charset = 'utf-8')
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{
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return (in_array(strtolower($charset), $this->charsets(), TRUE));
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}
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}
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/* End of file User_agent.php */
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/* Location: ./system/libraries/User_agent.php */ |