462 lines
15 KiB
PHP
462 lines
15 KiB
PHP
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<?php
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/**
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* Simple Machines Forum (SMF)
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*
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* @package SMF
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* @author Simple Machines https://www.simplemachines.org
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* @copyright 2022 Simple Machines and individual contributors
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* @license https://www.simplemachines.org/about/smf/license.php BSD
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*
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* @version 2.1.0
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*/
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if (!defined('SMF'))
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die('No direct access...');
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/**
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* Class browser_detector
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* This class is an experiment for the job of correctly detecting browsers and settings needed for them.
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* - Detects the following browsers
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* - Opera, Webkit, Firefox, Web_tv, Konqueror, IE, Gecko
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* - Webkit variants: Chrome, iphone, blackberry, android, safari, ipad, ipod
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* - Opera Versions: 6, 7, 8 ... 10 ... and mobile mini and mobi
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* - Firefox Versions: 1, 2, 3 .... 11 ...
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* - Chrome Versions: 1 ... 18 ...
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* - IE Versions: 4, 5, 5.5, 6, 7, 8, 9, 10 ... mobile and Mac
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* - MS Edge
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* - Nokia
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*/
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class browser_detector
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{
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/**
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* @var array Holds all the browser information. Its contents will be placed into $context['browser']
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*/
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private $_browsers = null;
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/**
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* @var boolean Whether or not this might be a mobile device
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*/
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private $_is_mobile = null;
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/**
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* The main method of this class, you know the one that does the job: detect the thing.
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* - determines the user agent (browser) as best it can.
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*/
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function detectBrowser()
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{
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global $context, $user_info;
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// Init
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$this->_browsers = array();
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$this->_is_mobile = false;
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// Initialize some values we'll set differently if necessary...
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$this->_browsers['needs_size_fix'] = false;
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// One at a time, one at a time, and in this order too
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if ($this->isOpera())
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$this->setupOpera();
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// Meh...
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elseif ($this->isEdge())
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$this->setupEdge();
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// Them webkits need to be set up too
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elseif ($this->isWebkit())
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$this->setupWebkit();
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// We may have work to do on Firefox...
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elseif ($this->isFirefox())
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$this->setupFirefox();
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// Old friend, old frenemy
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elseif ($this->isIe())
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$this->setupIe();
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// Just a few mobile checks
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$this->isOperaMini();
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$this->isOperaMobi();
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// IE11 seems to be fine by itself without being lumped into the "is_ie" category
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$this->isIe11();
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// Be you robot or human?
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if ($user_info['possibly_robot'])
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{
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// This isn't meant to be reliable, it's just meant to catch most bots to prevent PHPSESSID from showing up.
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$this->_browsers['possibly_robot'] = !empty($user_info['possibly_robot']);
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// Robots shouldn't be logging in or registering. So, they aren't a bot. Better to be wrong than sorry (or people won't be able to log in!), anyway.
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if ((isset($_REQUEST['action']) && in_array($_REQUEST['action'], array('login', 'login2', 'register', 'signup'))) || !$user_info['is_guest'])
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$this->_browsers['possibly_robot'] = false;
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}
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else
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$this->_browsers['possibly_robot'] = false;
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// Fill out the historical array as needed to support old mods that don't use isBrowser
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$this->fillInformation();
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// Make it easy to check if the browser is on a mobile device.
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$this->_browsers['is_mobile'] = $this->_is_mobile;
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// Last step ...
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$this->setupBrowserPriority();
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// Now see what you've done!
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$context['browser'] = $this->_browsers;
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}
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/**
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* Determine if the browser is Opera or not
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*
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* @return boolean Whether or not this is Opera
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*/
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function isOpera()
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{
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if (!isset($this->_browsers['is_opera']))
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$this->_browsers['is_opera'] = strpos($_SERVER['HTTP_USER_AGENT'], 'Opera') !== false;
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return $this->_browsers['is_opera'];
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}
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/**
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* Determine if the browser is IE or not
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*
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* @return boolean true Whether or not the browser is IE
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*/
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function isIe()
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{
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// I'm IE, Yes I'm the real IE; All you other IEs are just imitating.
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if (!isset($this->_browsers['is_ie']))
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$this->_browsers['is_ie'] = !$this->isOpera() && !$this->isGecko() && !$this->isWebTv() && preg_match('~MSIE \d+~', $_SERVER['HTTP_USER_AGENT']) === 1;
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return $this->_browsers['is_ie'];
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}
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/**
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* Determine if the browser is IE11 or not
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*
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* @return boolean Whether or not the browser is IE11
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*/
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function isIe11()
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{
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// IE11 is a bit different than earlier versions
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// The isGecko() part is to ensure we get this right...
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if (!isset($this->_browsers['is_ie11']))
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$this->_browsers['is_ie11'] = strpos($_SERVER['HTTP_USER_AGENT'], 'Trident') !== false && $this->isGecko();
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return $this->_browsers['is_ie11'];
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}
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/**
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* Determine if the browser is Edge or not
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*
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* @return boolean Whether or not the browser is Edge
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*/
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function isEdge()
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{
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if (!isset($this->_browsers['is_edge']))
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$this->_browsers['is_edge'] = strpos($_SERVER['HTTP_USER_AGENT'], 'Edge') !== false;
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return $this->_browsers['is_edge'];
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}
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/**
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* Determine if the browser is a Webkit based one or not
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*
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* @return boolean Whether or not this is a Webkit-based browser
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*/
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function isWebkit()
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{
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if (!isset($this->_browsers['is_webkit']))
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$this->_browsers['is_webkit'] = strpos($_SERVER['HTTP_USER_AGENT'], 'AppleWebKit') !== false;
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return $this->_browsers['is_webkit'];
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}
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/**
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* Determine if the browser is Firefox or one of its variants
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*
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* @return boolean Whether or not this is Firefox (or one of its variants)
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*/
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function isFirefox()
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{
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if (!isset($this->_browsers['is_firefox']))
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$this->_browsers['is_firefox'] = preg_match('~(?:Firefox|Ice[wW]easel|IceCat|Shiretoko|Minefield)/~', $_SERVER['HTTP_USER_AGENT']) === 1 && $this->isGecko();
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return $this->_browsers['is_firefox'];
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}
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/**
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* Determine if the browser is WebTv or not
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*
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* @return boolean Whether or not this is WebTV
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*/
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function isWebTv()
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{
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if (!isset($this->_browsers['is_web_tv']))
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$this->_browsers['is_web_tv'] = strpos($_SERVER['HTTP_USER_AGENT'], 'WebTV') !== false;
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return $this->_browsers['is_web_tv'];
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}
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/**
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* Determine if the browser is konqueror or not
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*
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* @return boolean Whether or not this is Konqueror
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*/
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function isKonqueror()
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{
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if (!isset($this->_browsers['is_konqueror']))
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$this->_browsers['is_konqueror'] = strpos($_SERVER['HTTP_USER_AGENT'], 'Konqueror') !== false;
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return $this->_browsers['is_konqueror'];
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}
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/**
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* Determine if the browser is Gecko or not
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*
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* @return boolean Whether or not this is a Gecko-based browser
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*/
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function isGecko()
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{
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if (!isset($this->_browsers['is_gecko']))
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$this->_browsers['is_gecko'] = strpos($_SERVER['HTTP_USER_AGENT'], 'Gecko') !== false && !$this->isWebkit() && !$this->isKonqueror();
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return $this->_browsers['is_gecko'];
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}
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/**
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* Determine if the browser is Opera Mini or not
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*
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* @return boolean Whether or not this is Opera Mini
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*/
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function isOperaMini()
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{
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if (!isset($this->_browsers['is_opera_mini']))
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$this->_browsers['is_opera_mini'] = (isset($_SERVER['HTTP_X_OPERAMINI_PHONE_UA']) || stripos($_SERVER['HTTP_USER_AGENT'], 'opera mini') !== false);
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if ($this->_browsers['is_opera_mini'])
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$this->_is_mobile = true;
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return $this->_browsers['is_opera_mini'];
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}
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/**
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* Determine if the browser is Opera Mobile or not
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*
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* @return boolean Whether or not this is Opera Mobile
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*/
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function isOperaMobi()
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{
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if (!isset($this->_browsers['is_opera_mobi']))
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$this->_browsers['is_opera_mobi'] = stripos($_SERVER['HTTP_USER_AGENT'], 'opera mobi') !== false;
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if ($this->_browsers['is_opera_mobi'])
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$this->_is_mobile = true;
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return $this->_browsers['is_opera_mini'];
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}
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/**
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* Detect Safari / Chrome / iP[ao]d / iPhone / Android / Blackberry from webkit.
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* - set the browser version for Safari and Chrome
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* - set the mobile flag for mobile based useragents
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*/
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private function setupWebkit()
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{
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$this->_browsers += array(
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'is_chrome' => strpos($_SERVER['HTTP_USER_AGENT'], 'Chrome') !== false,
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'is_iphone' => (strpos($_SERVER['HTTP_USER_AGENT'], 'iPhone') !== false || strpos($_SERVER['HTTP_USER_AGENT'], 'iPod') !== false) && strpos($_SERVER['HTTP_USER_AGENT'], 'iPad') === false,
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'is_blackberry' => stripos($_SERVER['HTTP_USER_AGENT'], 'BlackBerry') !== false || strpos($_SERVER['HTTP_USER_AGENT'], 'PlayBook') !== false,
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'is_android' => strpos($_SERVER['HTTP_USER_AGENT'], 'Android') !== false,
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'is_nokia' => strpos($_SERVER['HTTP_USER_AGENT'], 'SymbianOS') !== false,
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);
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// blackberry, playbook, iphone, nokia, android and ipods set a mobile flag
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if ($this->_browsers['is_iphone'] || $this->_browsers['is_blackberry'] || $this->_browsers['is_android'] || $this->_browsers['is_nokia'])
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$this->_is_mobile = true;
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// @todo what to do with the blaPad? ... for now leave it detected as Safari ...
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$this->_browsers['is_safari'] = strpos($_SERVER['HTTP_USER_AGENT'], 'Safari') !== false && !$this->_browsers['is_chrome'] && !$this->_browsers['is_iphone'];
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$this->_browsers['is_ipad'] = strpos($_SERVER['HTTP_USER_AGENT'], 'iPad') !== false;
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// if Chrome, get the major version
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if ($this->_browsers['is_chrome'])
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{
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if (preg_match('~chrome[/]([0-9][0-9]?[.])~i', $_SERVER['HTTP_USER_AGENT'], $match) === 1)
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$this->_browsers['is_chrome' . (int) $match[1]] = true;
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}
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// or if Safari get its major version
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if ($this->_browsers['is_safari'])
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{
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if (preg_match('~version/?(.*)safari.*~i', $_SERVER['HTTP_USER_AGENT'], $match) === 1)
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$this->_browsers['is_safari' . (int) trim($match[1])] = true;
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}
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}
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/**
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* Additional IE checks and settings.
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* - determines the version of the IE browser in use
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* - detects ie4 onward
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* - attempts to distinguish between IE and IE in compatibility view
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* - checks for old IE on macs as well, since we can
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*/
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private function setupIe()
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{
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$this->_browsers['is_ie_compat_view'] = false;
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// get the version of the browser from the msie tag
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if (preg_match('~MSIE\s?([0-9][0-9]?.[0-9])~i', $_SERVER['HTTP_USER_AGENT'], $msie_match) === 1)
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{
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$msie_match[1] = trim($msie_match[1]);
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$msie_match[1] = (($msie_match[1] - (int) $msie_match[1]) == 0) ? (int) $msie_match[1] : $msie_match[1];
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$this->_browsers['is_ie' . $msie_match[1]] = true;
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}
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// "modern" ie uses trident 4=ie8, 5=ie9, 6=ie10, 7=ie11 even in compatibility view
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if (preg_match('~Trident/([0-9.])~i', $_SERVER['HTTP_USER_AGENT'], $trident_match) === 1)
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{
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$this->_browsers['is_ie' . ((int) $trident_match[1] + 4)] = true;
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// If trident is set, see the (if any) msie tag in the user agent matches ... if not its in some compatibility view
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if (isset($msie_match[1]) && ($msie_match[1] < $trident_match[1] + 4))
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$this->_browsers['is_ie_compat_view'] = true;
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}
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// Detect true IE6 and IE7 and not IE in compat mode.
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$this->_browsers['is_ie7'] = !empty($this->_browsers['is_ie7']) && ($this->_browsers['is_ie_compat_view'] === false);
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$this->_browsers['is_ie6'] = !empty($this->_browsers['is_ie6']) && ($this->_browsers['is_ie_compat_view'] === false);
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// IE mobile 7 or 9, ... shucks why not
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if ((!empty($this->_browsers['is_ie7']) && strpos($_SERVER['HTTP_USER_AGENT'], 'IEMobile/7') !== false) || (!empty($this->_browsers['is_ie9']) && strpos($_SERVER['HTTP_USER_AGENT'], 'IEMobile/9') !== false))
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{
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$this->_browsers['is_ie_mobi'] = true;
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$this->_is_mobile = true;
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}
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// And some throwbacks to a bygone era, deposited here like cholesterol in your arteries
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$this->_browsers += array(
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'is_ie4' => !empty($this->_browsers['is_ie4']) && !$this->_browsers['is_web_tv'],
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'is_mac_ie' => strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE 5.') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mac') !== false
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);
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// Before IE8 we need to fix IE... lots!
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$this->_browsers['ie_standards_fix'] = (($this->_browsers['is_ie6'] === true) || ($this->_browsers['is_ie7'] === true)) ? true : false;
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// We may even need a size fix...
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$this->_browsers['needs_size_fix'] = (!empty($this->_browsers['is_ie5']) || !empty($this->_browsers['is_ie5.5']) || !empty($this->_browsers['is_ie4'])) && !$this->_browsers['is_mac_ie'];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Additional firefox checks.
|
||
|
|
* - Gets the version of the FF browser in use
|
||
|
|
* - Considers all FF variants as FF including IceWeasel, IceCat, Shiretoko and Minefiled
|
||
|
|
*/
|
||
|
|
private function setupFirefox()
|
||
|
|
{
|
||
|
|
if (preg_match('~(?:Firefox|Ice[wW]easel|IceCat|Shiretoko|Minefield)[\/ \(]([^ ;\)]+)~', $_SERVER['HTTP_USER_AGENT'], $match) === 1)
|
||
|
|
$this->_browsers['is_firefox' . (int) $match[1]] = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* More Opera checks if we are opera.
|
||
|
|
* - checks for the version of Opera in use
|
||
|
|
* - uses checks for 10 first and falls through to <9
|
||
|
|
*/
|
||
|
|
private function setupOpera()
|
||
|
|
{
|
||
|
|
// Opera 10+ uses the version tag at the end of the string
|
||
|
|
if (preg_match('~\sVersion/([0-9]+)\.[0-9]+(?:\s*|$)~', $_SERVER['HTTP_USER_AGENT'], $match))
|
||
|
|
$this->_browsers['is_opera' . (int) $match[1]] = true;
|
||
|
|
// Opera pre 10 is supposed to uses the Opera tag alone, as do some spoofers
|
||
|
|
elseif (preg_match('~Opera[ /]([0-9]+)(?!\\.[89])~', $_SERVER['HTTP_USER_AGENT'], $match))
|
||
|
|
$this->_browsers['is_opera' . (int) $match[1]] = true;
|
||
|
|
|
||
|
|
// Needs size fix?
|
||
|
|
$this->_browsers['needs_size_fix'] = !empty($this->_browsers['is_opera6']);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the version number for MS edge.
|
||
|
|
*/
|
||
|
|
private function setupEdge()
|
||
|
|
{
|
||
|
|
if (preg_match('~Edge[\/]([0-9][0-9]?[\.][0-9][0-9])~i', $_SERVER['HTTP_USER_AGENT'], $match) === 1)
|
||
|
|
$this->_browsers['is_edge' . (int) $match[1]] = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the browser name that we will use in the <body id="this_browser">
|
||
|
|
* - The order of each browser in $browser_priority is important
|
||
|
|
* - if you want to have id='ie6' and not id='ie' then it must appear first in the list of ie browsers
|
||
|
|
* - only sets browsers that may need some help via css for compatibility
|
||
|
|
*/
|
||
|
|
private function setupBrowserPriority()
|
||
|
|
{
|
||
|
|
global $context;
|
||
|
|
|
||
|
|
if ($this->_is_mobile)
|
||
|
|
$context['browser_body_id'] = 'mobile';
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// add in any specific detection conversions here if you want a special body id e.g. 'is_opera9' => 'opera9'
|
||
|
|
$browser_priority = array(
|
||
|
|
'is_ie6' => 'ie6',
|
||
|
|
'is_ie7' => 'ie7',
|
||
|
|
'is_ie8' => 'ie8',
|
||
|
|
'is_ie9' => 'ie9',
|
||
|
|
'is_ie10' => 'ie10',
|
||
|
|
'is_ie11' => 'ie11',
|
||
|
|
'is_ie' => 'ie',
|
||
|
|
'is_edge' => 'edge',
|
||
|
|
'is_firefox' => 'firefox',
|
||
|
|
'is_chrome' => 'chrome',
|
||
|
|
'is_safari' => 'safari',
|
||
|
|
'is_opera10' => 'opera10',
|
||
|
|
'is_opera11' => 'opera11',
|
||
|
|
'is_opera12' => 'opera12',
|
||
|
|
'is_opera' => 'opera',
|
||
|
|
'is_konqueror' => 'konqueror',
|
||
|
|
);
|
||
|
|
|
||
|
|
$context['browser_body_id'] = 'smf';
|
||
|
|
$active = array_reverse(array_keys($this->_browsers, true));
|
||
|
|
foreach ($active as $browser)
|
||
|
|
{
|
||
|
|
if (array_key_exists($browser, $browser_priority))
|
||
|
|
{
|
||
|
|
$context['browser_body_id'] = $browser_priority[$browser];
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Fill out the historical array
|
||
|
|
* - needed to support old mods that don't use isBrowser
|
||
|
|
*/
|
||
|
|
function fillInformation()
|
||
|
|
{
|
||
|
|
$this->_browsers += array(
|
||
|
|
'is_opera' => false,
|
||
|
|
'is_opera6' => false,
|
||
|
|
'is_opera7' => false,
|
||
|
|
'is_opera8' => false,
|
||
|
|
'is_opera9' => false,
|
||
|
|
'is_opera10' => false,
|
||
|
|
'is_webkit' => false,
|
||
|
|
'is_mac_ie' => false,
|
||
|
|
'is_web_tv' => false,
|
||
|
|
'is_konqueror' => false,
|
||
|
|
'is_firefox' => false,
|
||
|
|
'is_firefox1' => false,
|
||
|
|
'is_firefox2' => false,
|
||
|
|
'is_firefox3' => false,
|
||
|
|
'is_iphone' => false,
|
||
|
|
'is_android' => false,
|
||
|
|
'is_chrome' => false,
|
||
|
|
'is_safari' => false,
|
||
|
|
'is_gecko' => false,
|
||
|
|
'is_edge' => false,
|
||
|
|
'is_ie8' => false,
|
||
|
|
'is_ie7' => false,
|
||
|
|
'is_ie6' => false,
|
||
|
|
'is_ie5.5' => false,
|
||
|
|
'is_ie5' => false,
|
||
|
|
'is_ie' => false,
|
||
|
|
'is_ie4' => false,
|
||
|
|
'ie_standards_fix' => false,
|
||
|
|
'needs_size_fix' => false,
|
||
|
|
'possibly_robot' => false,
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
?>
|