645 lines
15 KiB
PHP
645 lines
15 KiB
PHP
<?php
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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
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*
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* This content is released under the MIT License (MIT)
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*
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* Copyright (c) 2019 - 2022, CodeIgniter Foundation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @package CodeIgniter
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* @author EllisLab Dev Team
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* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
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* @copyright Copyright (c) 2014 - 2019, British Columbia Institute of Technology (https://bcit.ca/)
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* @copyright Copyright (c) 2019 - 2022, CodeIgniter Foundation (https://codeigniter.com/)
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* @license https://opensource.org/licenses/MIT MIT License
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* @link https://codeigniter.com
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* @since Version 1.0.0
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* @filesource
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*/
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defined('BASEPATH') or exit('No direct script access allowed');
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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 device 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 EllisLab Dev Team
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* @link https://codeigniter.com/userguide3/libraries/user_agent.html
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*/
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class CI_User_agent
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{
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/**
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* Current user-agent
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*
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* @var string
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*/
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public $agent = null;
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/**
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* Flag for if the user-agent belongs to a browser
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*
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* @var bool
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*/
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public $is_browser = false;
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/**
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* Flag for if the user-agent is a robot
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*
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* @var bool
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*/
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public $is_robot = false;
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/**
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* Flag for if the user-agent is a mobile browser
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*
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* @var bool
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*/
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public $is_mobile = false;
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/**
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* Languages accepted by the current user agent
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*
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* @var array
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*/
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public $languages = array();
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/**
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* Character sets accepted by the current user agent
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*
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* @var array
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*/
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public $charsets = array();
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/**
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* List of platforms to compare against current user agent
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*
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* @var array
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*/
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public $platforms = array();
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/**
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* List of browsers to compare against current user agent
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*
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* @var array
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*/
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public $browsers = array();
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/**
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* List of mobile browsers to compare against current user agent
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*
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* @var array
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*/
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public $mobiles = array();
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/**
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* List of robots to compare against current user agent
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*
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* @var array
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*/
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public $robots = array();
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/**
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* Current user-agent platform
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*
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* @var string
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*/
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public $platform = '';
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/**
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* Current user-agent browser
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*
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* @var string
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*/
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public $browser = '';
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/**
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* Current user-agent version
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*
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* @var string
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*/
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public $version = '';
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/**
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* Current user-agent mobile name
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*
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* @var string
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*/
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public $mobile = '';
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/**
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* Current user-agent robot name
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*
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* @var string
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*/
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public $robot = '';
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/**
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* HTTP Referer
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*
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* @var mixed
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*/
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public $referer;
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// --------------------------------------------------------------------
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/**
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* Constructor
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*
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* Sets the User Agent and runs the compilation routine
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*
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* @return void
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*/
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public function __construct()
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{
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$this->_load_agent_file();
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if (isset($_SERVER['HTTP_USER_AGENT'])) {
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$this->agent = trim($_SERVER['HTTP_USER_AGENT']);
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$this->_compile_data();
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}
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log_message('info', '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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* @return bool
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*/
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protected function _load_agent_file()
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{
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if (($found = file_exists(APPPATH . 'config/user_agents.php'))) {
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include(APPPATH . 'config/user_agents.php');
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}
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if (file_exists(APPPATH . 'config/' . ENVIRONMENT . '/user_agents.php')) {
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include(APPPATH . 'config/' . ENVIRONMENT . '/user_agents.php');
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$found = true;
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}
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if ($found !== true) {
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return false;
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}
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$return = false;
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if (isset($platforms)) {
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$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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$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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$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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$this->robots = $robots;
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unset($robots);
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$return = true;
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}
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return $return;
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}
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// --------------------------------------------------------------------
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/**
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* Compile the User Agent Data
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*
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* @return bool
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*/
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protected function _compile_data()
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{
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$this->_set_platform();
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foreach (array('_set_robot', '_set_browser', '_set_mobile') as $function) {
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if ($this->$function() === true) {
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break;
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}
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}
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}
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// --------------------------------------------------------------------
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/**
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* Set the Platform
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*
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* @return bool
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*/
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protected function _set_platform()
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{
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if (is_array($this->platforms) && count($this->platforms) > 0) {
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foreach ($this->platforms as $key => $val) {
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if (preg_match('|' . preg_quote($key) . '|i', $this->agent)) {
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$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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return false;
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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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* @return bool
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*/
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protected function _set_browser()
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{
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if (is_array($this->browsers) && count($this->browsers) > 0) {
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foreach ($this->browsers as $key => $val) {
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if (preg_match('|' . $key . '.*?([0-9\.]+)|i', $this->agent, $match)) {
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$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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* @return bool
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*/
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protected function _set_robot()
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{
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if (is_array($this->robots) && count($this->robots) > 0) {
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foreach ($this->robots as $key => $val) {
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if (preg_match('|' . preg_quote($key) . '|i', $this->agent)) {
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$this->is_robot = true;
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$this->robot = $val;
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$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 Mobile Device
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*
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* @return bool
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*/
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protected function _set_mobile()
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{
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if (is_array($this->mobiles) && count($this->mobiles) > 0) {
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foreach ($this->mobiles as $key => $val) {
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if (false !== (stripos($this->agent, $key))) {
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$this->is_mobile = true;
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$this->mobile = $val;
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return true;
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}
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}
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}
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return false;
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}
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// --------------------------------------------------------------------
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/**
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* Set the accepted languages
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*
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* @return void
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*/
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protected function _set_languages()
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{
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if ((count($this->languages) === 0) && ! empty($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
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$this->languages = explode(',', preg_replace('/(;\s?q=[0-9\.]+)|\s/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_LANGUAGE']))));
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}
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if (count($this->languages) === 0) {
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$this->languages = array('Undefined');
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}
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}
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// --------------------------------------------------------------------
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/**
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* Set the accepted character sets
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*
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* @return void
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*/
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protected function _set_charsets()
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{
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if ((count($this->charsets) === 0) && ! empty($_SERVER['HTTP_ACCEPT_CHARSET'])) {
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$this->charsets = explode(',', preg_replace('/(;\s?q=.+)|\s/i', '', strtolower(trim($_SERVER['HTTP_ACCEPT_CHARSET']))));
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}
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if (count($this->charsets) === 0) {
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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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* @param string $key
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* @return bool
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*/
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public function is_browser($key = null)
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{
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if (! $this->is_browser) {
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return false;
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}
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// No need to be specific, it's a browser
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if ($key === null) {
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return true;
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}
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// Check for a specific browser
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return (isset($this->browsers[$key]) && $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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* @param string $key
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* @return bool
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*/
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public function is_robot($key = null)
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{
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if (! $this->is_robot) {
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return false;
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}
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// No need to be specific, it's a robot
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if ($key === null) {
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return true;
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}
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// Check for a specific robot
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return (isset($this->robots[$key]) && $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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* @param string $key
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* @return bool
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*/
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public function is_mobile($key = null)
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{
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if (! $this->is_mobile) {
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return false;
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}
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// No need to be specific, it's a mobile
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if ($key === null) {
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return true;
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}
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// Check for a specific robot
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return (isset($this->mobiles[$key]) && $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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* @return bool
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*/
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public function is_referral()
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{
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if (! isset($this->referer)) {
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if (empty($_SERVER['HTTP_REFERER'])) {
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$this->referer = false;
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} else {
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$referer_host = @parse_url($_SERVER['HTTP_REFERER'], PHP_URL_HOST);
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$own_host = parse_url((string) config_item('base_url'), PHP_URL_HOST);
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$this->referer = ($referer_host && $referer_host !== $own_host);
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}
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}
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return $this->referer;
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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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* @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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* @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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* @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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* @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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* @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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* @return string
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*/
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public function mobile()
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{
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return $this->mobile;
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}
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// --------------------------------------------------------------------
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/**
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* Get the referrer
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*
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* @return bool
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*/
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public function referrer()
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{
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return empty($_SERVER['HTTP_REFERER']) ? '' : trim($_SERVER['HTTP_REFERER']);
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}
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// --------------------------------------------------------------------
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/**
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* Get the accepted languages
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*
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* @return array
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*/
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public function languages()
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{
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if (count($this->languages) === 0) {
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$this->_set_languages();
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}
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return $this->languages;
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}
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// --------------------------------------------------------------------
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/**
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* Get the accepted Character Sets
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*
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* @return array
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*/
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public function charsets()
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{
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if (count($this->charsets) === 0) {
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$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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* @param string $lang
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* @return bool
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*/
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public function accept_lang($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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* @param string $charset
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* @return bool
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*/
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public function accept_charset($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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/**
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* Parse a custom user-agent string
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*
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* @param string $string
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* @return void
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*/
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public function parse($string)
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{
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// Reset values
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$this->is_browser = false;
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$this->is_robot = false;
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$this->is_mobile = false;
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$this->browser = '';
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$this->version = '';
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$this->mobile = '';
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$this->robot = '';
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// Set the new user-agent string and parse it, unless empty
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$this->agent = $string;
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if (! empty($string)) {
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$this->_compile_data();
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}
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}
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}
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