517 lines
14 KiB
PHP
517 lines
14 KiB
PHP
<?php
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/**
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* @package Joomla.Platform
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* @subpackage Application
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*
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* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
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* @license GNU General Public License version 2 or later; see LICENSE
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*/
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defined('JPATH_PLATFORM') or die;
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/**
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* Class to model a Web Client.
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*
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* @property-read integer $platform The detected platform on which the web client runs.
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* @property-read boolean $mobile True if the web client is a mobile device.
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* @property-read integer $engine The detected rendering engine used by the web client.
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* @property-read integer $browser The detected browser used by the web client.
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* @property-read string $browserVersion The detected browser version used by the web client.
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* @property-read array $languages The priority order detected accepted languages for the client.
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* @property-read array $encodings The priority order detected accepted encodings for the client.
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* @property-read string $userAgent The web client's user agent string.
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* @property-read string $acceptEncoding The web client's accepted encoding string.
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* @property-read string $acceptLanguage The web client's accepted languages string.
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* @property-read array $detection An array of flags determining whether or not a detection routine has been run.
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* @property-read boolean $robot True if the web client is a robot
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*
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* @package Joomla.Platform
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* @subpackage Application
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* @since 12.1
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*/
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class JApplicationWebClient
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{
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const WINDOWS = 1;
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const WINDOWS_PHONE = 2;
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const WINDOWS_CE = 3;
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const IPHONE = 4;
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const IPAD = 5;
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const IPOD = 6;
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const MAC = 7;
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const BLACKBERRY = 8;
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const ANDROID = 9;
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const LINUX = 10;
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const TRIDENT = 11;
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const WEBKIT = 12;
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const GECKO = 13;
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const PRESTO = 14;
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const KHTML = 15;
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const AMAYA = 16;
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const IE = 17;
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const FIREFOX = 18;
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const CHROME = 19;
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const SAFARI = 20;
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const OPERA = 21;
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const ANDROIDTABLET = 22;
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/**
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* @var integer The detected platform on which the web client runs.
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* @since 12.1
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*/
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protected $platform;
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/**
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* @var boolean True if the web client is a mobile device.
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* @since 12.1
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*/
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protected $mobile = false;
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/**
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* @var integer The detected rendering engine used by the web client.
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* @since 12.1
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*/
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protected $engine;
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/**
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* @var integer The detected browser used by the web client.
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* @since 12.1
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*/
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protected $browser;
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/**
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* @var string The detected browser version used by the web client.
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* @since 12.1
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*/
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protected $browserVersion;
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/**
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* @var array The priority order detected accepted languages for the client.
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* @since 12.1
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*/
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protected $languages = array();
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/**
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* @var array The priority order detected accepted encodings for the client.
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* @since 12.1
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*/
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protected $encodings = array();
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/**
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* @var string The web client's user agent string.
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* @since 12.1
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*/
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protected $userAgent;
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/**
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* @var string The web client's accepted encoding string.
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* @since 12.1
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*/
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protected $acceptEncoding;
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/**
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* @var string The web client's accepted languages string.
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* @since 12.1
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*/
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protected $acceptLanguage;
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/**
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* @var boolean True if the web client is a robot.
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* @since 12.3
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*/
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protected $robot = false;
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/**
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* @var array An array of flags determining whether or not a detection routine has been run.
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* @since 12.1
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*/
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protected $detection = array();
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/**
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* Class constructor.
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*
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* @param string $userAgent The optional user-agent string to parse.
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* @param string $acceptEncoding The optional client accept encoding string to parse.
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* @param string $acceptLanguage The optional client accept language string to parse.
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*
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* @since 12.1
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*/
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public function __construct($userAgent = null, $acceptEncoding = null, $acceptLanguage = null)
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{
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// If no explicit user agent string was given attempt to use the implicit one from server environment.
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if (empty($userAgent) && isset($_SERVER['HTTP_USER_AGENT']))
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{
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$this->userAgent = $_SERVER['HTTP_USER_AGENT'];
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}
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else
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{
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$this->userAgent = $userAgent;
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}
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// If no explicit acceptable encoding string was given attempt to use the implicit one from server environment.
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if (empty($acceptEncoding) && isset($_SERVER['HTTP_ACCEPT_ENCODING']))
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{
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$this->acceptEncoding = $_SERVER['HTTP_ACCEPT_ENCODING'];
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}
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else
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{
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$this->acceptEncoding = $acceptEncoding;
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}
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// If no explicit acceptable languages string was given attempt to use the implicit one from server environment.
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if (empty($acceptLanguage) && isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))
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{
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$this->acceptLanguage = $_SERVER['HTTP_ACCEPT_LANGUAGE'];
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}
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else
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{
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$this->acceptLanguage = $acceptLanguage;
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}
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}
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/**
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* Magic method to get an object property's value by name.
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*
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* @param string $name Name of the property for which to return a value.
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*
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* @return mixed The requested value if it exists.
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*
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* @since 12.1
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*/
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public function __get($name)
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{
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switch ($name)
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{
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case 'mobile':
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case 'platform':
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if (empty($this->detection['platform']))
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{
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$this->detectPlatform($this->userAgent);
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}
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break;
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case 'engine':
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if (empty($this->detection['engine']))
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{
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$this->detectEngine($this->userAgent);
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}
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break;
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case 'browser':
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case 'browserVersion':
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if (empty($this->detection['browser']))
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{
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$this->detectBrowser($this->userAgent);
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}
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break;
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case 'languages':
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if (empty($this->detection['acceptLanguage']))
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{
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$this->detectLanguage($this->acceptLanguage);
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}
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break;
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case 'encodings':
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if (empty($this->detection['acceptEncoding']))
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{
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$this->detectEncoding($this->acceptEncoding);
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}
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break;
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case 'robot':
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if (empty($this->detection['robot']))
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{
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$this->detectRobot($this->userAgent);
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}
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break;
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}
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// Return the property if it exists.
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if (isset($this->$name))
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{
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return $this->$name;
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}
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}
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/**
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* Detects the client browser and version in a user agent string.
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*
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* @param string $userAgent The user-agent string to parse.
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*
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* @return void
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*
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* @since 12.1
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*/
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protected function detectBrowser($userAgent)
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{
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// Attempt to detect the browser type. Obviously we are only worried about major browsers.
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if ((stripos($userAgent, 'MSIE') !== false) && (stripos($userAgent, 'Opera') === false))
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{
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$this->browser = self::IE;
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$patternBrowser = 'MSIE';
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}
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elseif ((stripos($userAgent, 'Firefox') !== false) && (stripos($userAgent, 'like Firefox') === false))
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{
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$this->browser = self::FIREFOX;
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$patternBrowser = 'Firefox';
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}
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elseif (stripos($userAgent, 'Chrome') !== false)
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{
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$this->browser = self::CHROME;
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$patternBrowser = 'Chrome';
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}
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elseif (stripos($userAgent, 'Safari') !== false)
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{
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$this->browser = self::SAFARI;
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$patternBrowser = 'Safari';
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}
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elseif (stripos($userAgent, 'Opera') !== false)
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{
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$this->browser = self::OPERA;
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$patternBrowser = 'Opera';
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}
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// If we detected a known browser let's attempt to determine the version.
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if ($this->browser)
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{
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// Build the REGEX pattern to match the browser version string within the user agent string.
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$pattern = '#(?<browser>Version|' . $patternBrowser . ')[/ ]+(?<version>[0-9.|a-zA-Z.]*)#';
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// Attempt to find version strings in the user agent string.
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$matches = array();
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if (preg_match_all($pattern, $userAgent, $matches))
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{
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// Do we have both a Version and browser match?
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if (count($matches['browser']) == 2)
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{
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// See whether Version or browser came first, and use the number accordingly.
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if (strripos($userAgent, 'Version') < strripos($userAgent, $patternBrowser))
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{
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$this->browserVersion = $matches['version'][0];
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}
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else
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{
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$this->browserVersion = $matches['version'][1];
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}
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}
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elseif (count($matches['browser']) > 2)
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{
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$key = array_search('Version', $matches['browser']);
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if ($key)
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{
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$this->browserVersion = $matches['version'][$key];
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}
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}
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// We only have a Version or a browser so use what we have.
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else
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{
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$this->browserVersion = $matches['version'][0];
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}
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}
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}
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// Mark this detection routine as run.
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$this->detection['browser'] = true;
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}
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/**
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* Method to detect the accepted response encoding by the client.
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*
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* @param string $acceptEncoding The client accept encoding string to parse.
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*
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* @return void
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*
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* @since 12.1
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*/
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protected function detectEncoding($acceptEncoding)
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{
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// Parse the accepted encodings.
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$this->encodings = array_map('trim', (array) explode(',', $acceptEncoding));
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// Mark this detection routine as run.
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$this->detection['acceptEncoding'] = true;
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}
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/**
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* Detects the client rendering engine in a user agent string.
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*
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* @param string $userAgent The user-agent string to parse.
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*
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* @return void
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*
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* @since 12.1
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*/
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protected function detectEngine($userAgent)
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{
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// Attempt to detect the client engine -- starting with the most popular ... for now.
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if (stripos($userAgent, 'MSIE') !== false || stripos($userAgent, 'Trident') !== false)
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{
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$this->engine = self::TRIDENT;
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}
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// Evidently blackberry uses WebKit and doesn't necessarily report it. Bad RIM.
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elseif (stripos($userAgent, 'AppleWebKit') !== false || stripos($userAgent, 'blackberry') !== false)
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{
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$this->engine = self::WEBKIT;
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}
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// We have to check for like Gecko because some other browsers spoof Gecko.
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elseif (stripos($userAgent, 'Gecko') !== false && stripos($userAgent, 'like Gecko') === false)
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{
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$this->engine = self::GECKO;
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}
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// Sometimes Opera browsers don't say Presto.
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elseif (stripos($userAgent, 'Opera') !== false || stripos($userAgent, 'Presto') !== false)
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{
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$this->engine = self::PRESTO;
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}
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// *sigh*
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elseif (stripos($userAgent, 'KHTML') !== false)
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{
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$this->engine = self::KHTML;
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}
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// Lesser known engine but it finishes off the major list from Wikipedia :-)
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elseif (stripos($userAgent, 'Amaya') !== false)
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{
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$this->engine = self::AMAYA;
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}
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// Mark this detection routine as run.
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$this->detection['engine'] = true;
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}
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/**
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* Method to detect the accepted languages by the client.
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*
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* @param mixed $acceptLanguage The client accept language string to parse.
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*
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* @return void
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*
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* @since 12.1
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*/
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protected function detectLanguage($acceptLanguage)
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{
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// Parse the accepted encodings.
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$this->languages = array_map('trim', (array) explode(',', $acceptLanguage));
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// Mark this detection routine as run.
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$this->detection['acceptLanguage'] = true;
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}
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/**
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* Detects the client platform in a user agent string.
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*
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* @param string $userAgent The user-agent string to parse.
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*
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* @return void
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*
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* @since 12.1
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*/
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protected function detectPlatform($userAgent)
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{
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// Attempt to detect the client platform.
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if (stripos($userAgent, 'Windows') !== false)
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{
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$this->platform = self::WINDOWS;
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// Let's look at the specific mobile options in the Windows space.
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if (stripos($userAgent, 'Windows Phone') !== false)
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{
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$this->mobile = true;
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$this->platform = self::WINDOWS_PHONE;
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}
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elseif (stripos($userAgent, 'Windows CE') !== false)
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{
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$this->mobile = true;
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$this->platform = self::WINDOWS_CE;
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}
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}
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// Interestingly 'iPhone' is present in all iOS devices so far including iPad and iPods.
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elseif (stripos($userAgent, 'iPhone') !== false)
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{
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$this->mobile = true;
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$this->platform = self::IPHONE;
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// Let's look at the specific mobile options in the iOS space.
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if (stripos($userAgent, 'iPad') !== false)
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{
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$this->platform = self::IPAD;
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}
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elseif (stripos($userAgent, 'iPod') !== false)
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{
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$this->platform = self::IPOD;
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}
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}
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// In case where iPhone is not mentioed in iPad user agent string
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elseif (stripos($userAgent, 'iPad') !== false)
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{
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$this->mobile = true;
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$this->platform = self::IPAD;
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}
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// In case where iPhone is not mentioed in iPod user agent string
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elseif (stripos($userAgent, 'iPod') !== false)
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{
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$this->mobile = true;
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$this->platform = self::IPOD;
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}
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// This has to come after the iPhone check because mac strings are also present in iOS devices.
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elseif (preg_match('/macintosh|mac os x/i', $userAgent))
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{
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$this->platform = self::MAC;
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}
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elseif (stripos($userAgent, 'Blackberry') !== false)
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{
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$this->mobile = true;
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$this->platform = self::BLACKBERRY;
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}
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elseif (stripos($userAgent, 'Android') !== false)
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{
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$this->mobile = true;
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$this->platform = self::ANDROID;
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/**
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* Attempt to distinguish between Android phones and tablets
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* There is no totally foolproof method but certain rules almost always hold
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* Android 3.x is only used for tablets
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* Some devices and browsers encourage users to change their UA string to include Tablet.
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* Google encourages manufacturers to exclude the string Mobile from tablet device UA strings.
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* In some modes Kindle Android devices include the string Mobile but they include the string Silk.
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*/
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if (stripos($userAgent, 'Android 3') !== false || stripos($userAgent, 'Tablet') !== false
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|| stripos($userAgent, 'Mobile') === false || stripos($userAgent, 'Silk') !== false )
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{
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$this->platform = self::ANDROIDTABLET;
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}
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}
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elseif (stripos($userAgent, 'Linux') !== false)
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{
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$this->platform = self::LINUX;
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}
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// Mark this detection routine as run.
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$this->detection['platform'] = true;
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}
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/**
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* Determines if the browser is a robot or not.
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*
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* @param string $userAgent The user-agent string to parse.
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*
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* @return void
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*
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* @since 12.3
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*/
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protected function detectRobot($userAgent)
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{
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if (preg_match('/http|bot|robot|spider|crawler|curl|^$/i', $userAgent))
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{
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$this->robot = true;
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}
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else
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{
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$this->robot = false;
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}
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$this->detection['robot'] = true;
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}
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}
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