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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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284
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* Additional IE checks and settings. |
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285
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* - determines the version of the IE browser in use |
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286
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* - detects ie4 onward |
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287
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* - attempts to distinguish between IE and IE in compatibility view |
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288
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* - checks for old IE on macs as well, since we can |
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289
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*/ |
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290
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private function setupIe() |
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291
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|
|
{ |
|
292
|
|
|
$this->_browsers['is_ie_compat_view'] = false; |
|
293
|
|
|
|
|
294
|
|
|
// get the version of the browser from the msie tag |
|
295
|
|
|
if (preg_match('~MSIE\s?([0-9][0-9]?.[0-9])~i', $_SERVER['HTTP_USER_AGENT'], $msie_match) === 1) |
|
296
|
|
|
{ |
|
297
|
|
|
$msie_match[1] = trim($msie_match[1]); |
|
298
|
|
|
$msie_match[1] = (($msie_match[1] - (int) $msie_match[1]) == 0) ? (int) $msie_match[1] : $msie_match[1]; |
|
299
|
|
|
$this->_browsers['is_ie' . $msie_match[1]] = true; |
|
300
|
|
|
} |
|
301
|
|
|
|
|
302
|
|
|
// "modern" ie uses trident 4=ie8, 5=ie9, 6=ie10, 7=ie11 even in compatibility view |
|
303
|
|
|
if (preg_match('~Trident/([0-9.])~i', $_SERVER['HTTP_USER_AGENT'], $trident_match) === 1) |
|
304
|
|
|
{ |
|
305
|
|
|
$this->_browsers['is_ie' . ((int) $trident_match[1] + 4)] = true; |
|
306
|
|
|
|
|
307
|
|
|
// If trident is set, see the (if any) msie tag in the user agent matches ... if not its in some compatibility view |
|
308
|
|
|
if (isset($msie_match[1]) && ($msie_match[1] < $trident_match[1] + 4)) |
|
309
|
|
|
$this->_browsers['is_ie_compat_view'] = true; |
|
310
|
|
|
} |
|
311
|
|
|
|
|
312
|
|
|
// Detect true IE6 and IE7 and not IE in compat mode. |
|
313
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|
|
$this->_browsers['is_ie7'] = !empty($this->_browsers['is_ie7']) && ($this->_browsers['is_ie_compat_view'] === false); |
|
314
|
|
|
$this->_browsers['is_ie6'] = !empty($this->_browsers['is_ie6']) && ($this->_browsers['is_ie_compat_view'] === false); |
|
315
|
|
|
|
|
316
|
|
|
// IE mobile 7 or 9, ... shucks why not |
|
317
|
|
|
if ((!empty($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)) |
|
318
|
|
|
{ |
|
319
|
|
|
$this->_browsers['is_ie_mobi'] = true; |
|
320
|
|
|
$this->_is_mobile = true; |
|
321
|
|
|
} |
|
322
|
|
|
|
|
323
|
|
|
// And some throwbacks to a bygone era, deposited here like cholesterol in your arteries |
|
324
|
|
|
$this->_browsers += array( |
|
325
|
|
|
'is_ie4' => !empty($this->_browsers['is_ie4']) && !$this->_browsers['is_web_tv'], |
|
326
|
|
|
'is_mac_ie' => strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE 5.') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mac') !== false |
|
327
|
|
|
); |
|
328
|
|
|
|
|
329
|
|
|
// Before IE8 we need to fix IE... lots! |
|
330
|
|
|
$this->_browsers['ie_standards_fix'] = (($this->_browsers['is_ie6'] === true) || ($this->_browsers['is_ie7'] === true)) ? true : false; |
|
331
|
|
|
|
|
332
|
|
|
// We may even need a size fix... |
|
333
|
|
|
$this->_browsers['needs_size_fix'] = (!empty($this->_browsers['is_ie5']) || !empty($this->_browsers['is_ie5.5']) || !empty($this->_browsers['is_ie4'])) && !$this->_browsers['is_mac_ie']; |
|
334
|
|
|
} |
|
335
|
|
|
|
|
336
|
|
|
/** |
|
337
|
|
|
* Additional firefox checks. |
|
338
|
|
|
* - Gets the version of the FF browser in use |
|
339
|
|
|
* - Considers all FF variants as FF including IceWeasel, IceCat, Shiretoko and Minefiled |
|
340
|
|
|
*/ |
|
341
|
|
|
private function setupFirefox() |
|
342
|
|
|
{ |
|
343
|
|
|
if (preg_match('~(?:Firefox|Ice[wW]easel|IceCat|Shiretoko|Minefield)[\/ \(]([^ ;\)]+)~', $_SERVER['HTTP_USER_AGENT'], $match) === 1) |
|
344
|
|
|
$this->_browsers['is_firefox' . (int) $match[1]] = true; |
|
345
|
|
|
} |
|
346
|
|
|
|
|
347
|
|
|
/** |
|
348
|
|
|
* More Opera checks if we are opera. |
|
349
|
|
|
* - checks for the version of Opera in use |
|
350
|
|
|
* - uses checks for 10 first and falls through to <9 |
|
351
|
|
|
*/ |
|
352
|
|
|
private function setupOpera() |
|
353
|
|
|
{ |
|
354
|
|
|
// Opera 10+ uses the version tag at the end of the string |
|
355
|
|
|
if (preg_match('~\sVersion/([0-9]+)\.[0-9]+(?:\s*|$)~', $_SERVER['HTTP_USER_AGENT'], $match)) |
|
356
|
|
|
$this->_browsers['is_opera' . (int) $match[1]] = true; |
|
357
|
|
|
// Opera pre 10 is supposed to uses the Opera tag alone, as do some spoofers |
|
358
|
|
|
elseif (preg_match('~Opera[ /]([0-9]+)(?!\\.[89])~', $_SERVER['HTTP_USER_AGENT'], $match)) |
|
359
|
|
|
$this->_browsers['is_opera' . (int) $match[1]] = true; |
|
360
|
|
|
|
|
361
|
|
|
// Needs size fix? |
|
362
|
|
|
$this->_browsers['needs_size_fix'] = !empty($this->_browsers['is_opera6']); |
|
363
|
|
|
} |
|
364
|
|
|
|
|
365
|
|
|
/** |
|
366
|
|
|
* Sets the version number for MS edge. |
|
367
|
|
|
*/ |
|
368
|
|
|
private function setupEdge() |
|
369
|
|
|
{ |
|
370
|
|
|
if (preg_match('~Edge[\/]([0-9][0-9]?[\.][0-9][0-9])~i', $_SERVER['HTTP_USER_AGENT'], $match) === 1) |
|
371
|
|
|
$this->_browsers['is_edge' . (int) $match[1]] = true; |
|
372
|
|
|
} |
|
373
|
|
|
|
|
374
|
|
|
/** |
|
375
|
|
|
* Get the browser name that we will use in the <body id="this_browser"> |
|
376
|
|
|
* - The order of each browser in $browser_priority is important |
|
377
|
|
|
* - if you want to have id='ie6' and not id='ie' then it must appear first in the list of ie browsers |
|
378
|
|
|
* - only sets browsers that may need some help via css for compatibility |
|
379
|
|
|
*/ |
|
380
|
|
|
private function setupBrowserPriority() |
|
381
|
|
|
{ |
|
382
|
|
|
global $context; |
|
383
|
|
|
|
|
384
|
|
|
if ($this->_is_mobile) |
|
385
|
|
|
$context['browser_body_id'] = 'mobile'; |
|
386
|
|
|
else |
|
387
|
|
|
{ |
|
388
|
|
|
// add in any specific detection conversions here if you want a special body id e.g. 'is_opera9' => 'opera9' |
|
389
|
|
|
$browser_priority = array( |
|
390
|
|
|
'is_ie6' => 'ie6', |
|
391
|
|
|
'is_ie7' => 'ie7', |
|
392
|
|
|
'is_ie8' => 'ie8', |
|
393
|
|
|
'is_ie9' => 'ie9', |
|
394
|
|
|
'is_ie10' => 'ie10', |
|
395
|
|
|
'is_ie11' => 'ie11', |
|
396
|
|
|
'is_ie' => 'ie', |
|
397
|
|
|
'is_edge' => 'edge', |
|
398
|
|
|
'is_firefox' => 'firefox', |
|
399
|
|
|
'is_chrome' => 'chrome', |
|
400
|
|
|
'is_safari' => 'safari', |
|
401
|
|
|
'is_opera10' => 'opera10', |
|
402
|
|
|
'is_opera11' => 'opera11', |
|
403
|
|
|
'is_opera12' => 'opera12', |
|
404
|
|
|
'is_opera' => 'opera', |
|
405
|
|
|
'is_konqueror' => 'konqueror', |
|
406
|
|
|
); |
|
407
|
|
|
|
|
408
|
|
|
$context['browser_body_id'] = 'smf'; |
|
409
|
|
|
$active = array_reverse(array_keys($this->_browsers, true)); |
|
410
|
|
|
foreach ($active as $browser) |
|
411
|
|
|
{ |
|
412
|
|
|
if (array_key_exists($browser, $browser_priority)) |
|
413
|
|
|
{ |
|
414
|
|
|
$context['browser_body_id'] = $browser_priority[$browser]; |
|
415
|
|
|
break; |
|
416
|
|
|
} |
|
417
|
|
|
} |
|
418
|
|
|
} |
|
419
|
|
|
} |
|
420
|
|
|
|
|
421
|
|
|
/** |
|
422
|
|
|
* Fill out the historical array |
|
423
|
|
|
* - needed to support old mods that don't use isBrowser |
|
424
|
|
|
*/ |
|
425
|
|
|
function fillInformation() |
|
|
|
|
|
|
426
|
|
|
{ |
|
427
|
|
|
$this->_browsers += array( |
|
428
|
|
|
'is_opera' => false, |
|
429
|
|
|
'is_opera6' => false, |
|
430
|
|
|
'is_opera7' => false, |
|
431
|
|
|
'is_opera8' => false, |
|
432
|
|
|
'is_opera9' => false, |
|
433
|
|
|
'is_opera10' => false, |
|
434
|
|
|
'is_webkit' => false, |
|
435
|
|
|
'is_mac_ie' => false, |
|
436
|
|
|
'is_web_tv' => false, |
|
437
|
|
|
'is_konqueror' => false, |
|
438
|
|
|
'is_firefox' => false, |
|
439
|
|
|
'is_firefox1' => false, |
|
440
|
|
|
'is_firefox2' => false, |
|
441
|
|
|
'is_firefox3' => false, |
|
442
|
|
|
'is_iphone' => false, |
|
443
|
|
|
'is_android' => false, |
|
444
|
|
|
'is_chrome' => false, |
|
445
|
|
|
'is_safari' => false, |
|
446
|
|
|
'is_gecko' => false, |
|
447
|
|
|
'is_edge' => false, |
|
448
|
|
|
'is_ie8' => false, |
|
449
|
|
|
'is_ie7' => false, |
|
450
|
|
|
'is_ie6' => false, |
|
451
|
|
|
'is_ie5.5' => false, |
|
452
|
|
|
'is_ie5' => false, |
|
453
|
|
|
'is_ie' => false, |
|
454
|
|
|
'is_ie4' => false, |
|
455
|
|
|
'ie_standards_fix' => false, |
|
456
|
|
|
'needs_size_fix' => false, |
|
457
|
|
|
'possibly_robot' => false, |
|
458
|
|
|
); |
|
459
|
|
|
} |
|
460
|
|
|
} |
|
461
|
|
|
|
|
462
|
|
|
?> |
albertlast /
SMF2.1
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Adding explicit visibility (
private,protected, orpublic) is generally recommend to communicate to other developers how, and from where this method is intended to be used.