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