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<?php |
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namespace Jaybizzle\CrawlerDetect; |
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class CrawlerDetect |
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{ |
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/** |
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* The user agent. |
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* |
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* @var null |
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*/ |
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protected $userAgent = null; |
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/** |
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* Headers that contain a user agent. |
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* |
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* @var array |
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*/ |
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protected $httpHeaders = array(); |
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/** |
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* Store regex matches. |
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* |
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* @var array |
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*/ |
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protected $matches = array(); |
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/** |
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* List of strings to remove from the user agent before running the crawler regex |
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* Over a large list of user agents, this gives us about a 55% speed increase! |
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* |
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* @var array |
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*/ |
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protected static $ignore = array( |
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'Safari.[\d\.]*', |
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'Firefox.[\d\.]*', |
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'Chrome.[\d\.]*', |
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'Chromium.[\d\.]*', |
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'MSIE.[\d\.]', |
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'Opera\/[\d\.]*', |
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'Mozilla.[\d\.]*', |
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'AppleWebKit.[\d\.]*', |
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'Trident.[\d\.]*', |
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'Windows NT.[\d\.]*', |
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'Android.[\d\.]*', |
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'Macintosh.', |
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'Ubuntu', |
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'Linux', |
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'[ ]Intel', |
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'Mac OS X [\d_]*', |
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'(like )?Gecko(.[\d\.]*)?', |
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'KHTML', |
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'CriOS.[\d\.]*', |
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'CPU iPhone OS ([0-9_])* like Mac OS X', |
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'CPU OS ([0-9_])* like Mac OS X', |
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'iPod', |
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'compatible', |
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'x86_..', |
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'i686', |
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'x64', |
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'X11', |
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'rv:[\d\.]*', |
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'Version.[\d\.]*', |
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'WOW64', |
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'Win64', |
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'Dalvik.[\d\.]*', |
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' \.NET CLR [\d\.]*', |
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'Presto.[\d\.]*', |
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'Media Center PC', |
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'BlackBerry', |
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'Build', |
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'Opera Mini\/\d{1,2}\.\d{1,2}\.[\d\.]*\/\d{1,2}\.', |
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'Opera', |
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' \.NET[\d\.]*', |
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'\(|\)|;|,', // Remove the following characters ( ) : , |
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); |
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/** |
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* Array of regular expressions to match against the user agent. |
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* |
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* @var array |
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*/ |
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protected static $crawlers = array( |
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'.*Java.*outbrain', |
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'008\\/', |
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'^NING\\/', |
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'A6-Indexer', |
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'Aboundex', |
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'Accoona-AI-Agent', |
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'acoon', |
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'AddThis', |
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'ADmantX', |
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'AHC', |
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'Airmail', |
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'Anemone', |
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'Arachmo', |
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'archive-com', |
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'B-l-i-t-z-B-O-T', |
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'Backlink-Ceck\.de', |
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'BazQux', |
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'bibnum\.bnf', |
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'biglotron', |
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'BingPreview', |
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'binlar', |
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'Bloglovin', |
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'Blogtrottr', |
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'boitho\.com-dc', |
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'Browsershots', |
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'BUbiNG', |
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'Butterfly\\/', |
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'BuzzSumo', |
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'CapsuleChecker', |
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'CC Metadata Scaper', |
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'Cerberian Drtrs', |
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'changedetection', |
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'Charlotte', |
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'clips\.ua\.ac\.be', |
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'CloudFlare-AlwaysOnline', |
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'coccoc', |
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'CommaFeed', |
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'Commons-HttpClient', |
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'convera', |
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'cosmos', |
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'Covario-IDS', |
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'Curious George', |
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'curl', |
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'CyberPatrol', |
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'DataparkSearch', |
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'dataprovider', |
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'Daum(oa)?[ \\/][0-9]', |
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'Digg', |
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'DomainAppender', |
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'Dragonfly File Reader', |
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'drupact', |
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'EARTHCOM', |
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'ec2linkfinder', |
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'ECCP', |
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'ElectricMonk', |
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'EMail Exractor', |
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'EmailWolf', |
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'Embed PHP Library', |
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'Embedly', |
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'europarchive\.org', |
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'EventMachine HttpClient', |
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'ExactSearch', |
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'ExaleadCloudview', |
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'eZ Publish Link Validator', |
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'ezooms', |
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'facebookexternalhit', |
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'facebookplatform', |
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'Feed Wrangler', |
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'Feedbin', |
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'FeedBurner', |
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'Feedfetcher-Google', |
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'Feedly', |
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'Feedspot', |
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'FeedValidator', |
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'Fever', |
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'findlink', |
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'findthatfile', |
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'Flamingo_SearchEngine', |
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'fluffy', |
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'g00g1e\.net', |
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'Genieo', |
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'getprismatic\.com', |
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'GigablastOpenSource', |
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'Go-http-client', |
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'Google favicon', |
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'Google Keyword Suggestion', |
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'Google Page Speed Insights', |
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'Google-HTTP-Java-Client', |
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'google_partner_monitoring', |
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'GoogleProducer', |
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'grub-client', |
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'heritrix', |
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'Holmes', |
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'htdig', |
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'HTTPMon', |
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'httpunit', |
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'httrack', |
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'HubPages.*crawlingpolicy', |
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'HubSpot Marketing Grader', |
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'ichiro', |
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'IDG Twitter Links Resolver', |
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'igdeSpyder', |
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'InAGist', |
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'infegy', |
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'InfoWizards Reciprocal Link System PRO', |
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'integromedb', |
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'IODC', |
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'IOI', |
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'ips-agent', |
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'iZSearch', |
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'Jigsaw', |
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'Jobrapido', |
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'kouio', |
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'L\.webis', |
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'Larbin', |
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'libwww', |
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'Link Valet', |
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'linkCheck', |
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'linkdex', |
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'LinkExaminer', |
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'LinkWalker', |
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'Lipperhey', |
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'LongURL API', |
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'ltx71', |
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'lwp-trivial', |
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'lycos', |
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'mabontland', |
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'MagpieRSS', |
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'Mediapartners-Google', |
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'Mediapartners-Google', |
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'MegaIndex\.ru', |
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'MetaURI', |
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'Mnogosearch', |
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'mogimogi', |
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'Morning Paper', |
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'Mrcgiguy', |
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'MVAClient', |
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'Netcraft Web Server Survey', |
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'NetLyzer FastProbe', |
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'netresearch', |
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'Netvibes', |
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'NewsBlur .*(Fetcher|Finder)', |
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'NewsGator', |
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'newsme', |
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'NG-Search', |
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'nineconnections\.com', |
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'nominet\.org\.uk', |
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'Notifixious', |
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'nuhk', |
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'nutch', |
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'Nymesis', |
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'oegp', |
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'Omea Reader', |
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'online link validator', |
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'Online Website Link Checker', |
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'Orbiter', |
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'ow\.ly', |
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'page2rss', |
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'PagePeeker', |
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'panscient', |
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'Peew', |
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'phpcrawl', |
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'phpservermon', |
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'Pingdom\.com', |
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'Pinterest', |
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'Pizilla', |
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'Ploetz \+ Zeller', |
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'Plukkie', |
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'PocketParser', |
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'Pompos', |
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'postano', |
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'PostPost', |
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'postrank', |
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'proximic', |
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'Pulsepoint XT3 web scraper', |
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'Python-httplib2', |
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'python-requests', |
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'Python-urllib', |
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'Qseero', |
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'Qwantify', |
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'Radian6', |
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'RebelMouse', |
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'REL Link Checker', |
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'RetrevoPageAnalyzer', |
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'Riddler', |
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'Robosourcer', |
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'ROI Hunter', |
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'Ruby', |
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'SBIder', |
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'scooter', |
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'ScoutJet', |
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'ScoutURLMonitor', |
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'Scrapy', |
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'Scrubby', |
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'SearchSight', |
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'semanticdiscovery', |
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'SEOstats', |
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'Server Density Service Monitoring.*', |
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'servernfo\.com', |
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283
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'Seznam screenshot-generator', |
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284
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'ShopWiki', |
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285
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'SilverReader', |
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286
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'SimplePie', |
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287
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'Site24x7', |
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288
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'SiteBar', |
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289
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'siteexplorer\.info', |
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290
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'Siteimprove\.com', |
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291
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'SkypeUriPreview', |
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292
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'slider\.com', |
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293
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'slurp', |
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294
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'Snappy', |
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295
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'sogou', |
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296
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'SortSite', |
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297
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'speedy', |
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298
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'Spinn3r', |
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299
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'Springshare Link Checker', |
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300
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'Sqworm', |
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301
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'StackRambler', |
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302
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'Stratagems Kumo', |
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303
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'summify', |
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304
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'teoma', |
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305
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'theoldreader\.com', |
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306
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'TinEye', |
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307
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'Tiny Tiny RSS', |
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308
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'Traackr.com', |
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309
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'truwoGPS', |
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310
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'tweetedtimes\.com', |
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311
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'Twikle', |
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312
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'Typhoeus', |
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313
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'UdmSearch', |
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314
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'UnwindFetchor', |
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315
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'updated', |
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316
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'URLChecker', |
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317
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'urlresolver', |
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318
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'Vagabondo', |
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319
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'Validator\.nu\\/LV', |
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320
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'via ggpht\.com GoogleImageProxy', |
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321
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'Vivante Link Checker', |
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322
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'Vortex', |
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323
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'voyager\\/', |
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324
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'VYU2', |
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325
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'W3C-checklink', |
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326
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'W3C-mobileOK', |
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327
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'W3C_CSS_Validator_JFouffa', |
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328
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'W3C_I18n-Checker', |
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329
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'W3C_Unicorn', |
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330
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'W3C_Validator', |
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331
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'web-capture\.net', |
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332
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'webcollage', |
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333
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'WebIndex', |
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334
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'webmon ', |
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335
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'websitepulse[+ ]checker', |
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336
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'Websquash\.com', |
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337
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'WebThumbnail', |
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338
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'WeSEE:Search', |
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339
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'wf84', |
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340
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'wget', |
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341
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'WomlpeFactory', |
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342
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|
|
'wotbox', |
|
343
|
|
|
'www\.monitor\.us', |
|
344
|
|
|
'Xenu Link Sleuth', |
|
345
|
|
|
'XML Sitemaps Generator', |
|
346
|
|
|
'Y!J-ASR', |
|
347
|
|
|
'yacy', |
|
348
|
|
|
'Yahoo Ad monitoring', |
|
349
|
|
|
'Yahoo Link Preview', |
|
350
|
|
|
'YahooSeeker', |
|
351
|
|
|
'yandex', |
|
352
|
|
|
'yanga', |
|
353
|
|
|
'yeti', |
|
354
|
|
|
'yoogliFetchAgent', |
|
355
|
|
|
'YottaaMonitor', |
|
356
|
|
|
'Zao', |
|
357
|
|
|
'ZyBorg', |
|
358
|
|
|
'[a-z0-9\\-_]*((?<!cu)bot|crawler|archiver|transcoder|spider)', |
|
359
|
|
|
); |
|
360
|
|
|
|
|
361
|
|
|
/** |
|
362
|
|
|
* All possible HTTP headers that represent the |
|
363
|
|
|
* User-Agent string. |
|
364
|
|
|
* |
|
365
|
|
|
* @var array |
|
366
|
|
|
*/ |
|
367
|
|
|
protected static $uaHttpHeaders = array( |
|
368
|
|
|
// The default User-Agent string. |
|
369
|
|
|
'HTTP_USER_AGENT', |
|
370
|
|
|
// Header can occur on devices using Opera Mini. |
|
371
|
|
|
'HTTP_X_OPERAMINI_PHONE_UA', |
|
372
|
|
|
// Vodafone specific header: http://www.seoprinciple.com/mobile-web-community-still-angry-at-vodafone/24/ |
|
373
|
|
|
'HTTP_X_DEVICE_USER_AGENT', |
|
374
|
|
|
'HTTP_X_ORIGINAL_USER_AGENT', |
|
375
|
|
|
'HTTP_X_SKYFIRE_PHONE', |
|
376
|
|
|
'HTTP_X_BOLT_PHONE_UA', |
|
377
|
|
|
'HTTP_DEVICE_STOCK_UA', |
|
378
|
|
|
'HTTP_X_UCBROWSER_DEVICE_UA', |
|
379
|
|
|
); |
|
380
|
|
|
|
|
381
|
|
|
/** |
|
382
|
|
|
* Class constructor. |
|
383
|
|
|
*/ |
|
384
|
|
|
public function __construct(array $headers = null, $userAgent = null) |
|
385
|
|
|
{ |
|
386
|
|
|
$this->setHttpHeaders($headers); |
|
387
|
|
|
$this->setUserAgent($userAgent); |
|
388
|
|
|
} |
|
389
|
|
|
|
|
390
|
|
|
/** |
|
391
|
|
|
* Set HTTP headers. |
|
392
|
|
|
* |
|
393
|
|
|
* @param array $httpHeaders |
|
394
|
|
|
*/ |
|
395
|
|
|
public function setHttpHeaders($httpHeaders = null) |
|
|
|
|
|
|
396
|
|
|
{ |
|
397
|
|
|
// use global _SERVER if $httpHeaders aren't defined |
|
398
|
|
|
if (!is_array($httpHeaders) || !count($httpHeaders)) { |
|
399
|
|
|
$httpHeaders = $_SERVER; |
|
400
|
|
|
} |
|
401
|
|
|
// clear existing headers |
|
402
|
|
|
$this->httpHeaders = array(); |
|
403
|
|
|
// Only save HTTP headers. In PHP land, that means only _SERVER vars that |
|
404
|
|
|
// start with HTTP_. |
|
405
|
|
|
foreach ($httpHeaders as $key => $value) { |
|
406
|
|
|
if (substr($key, 0, 5) === 'HTTP_') { |
|
407
|
|
|
$this->httpHeaders[$key] = $value; |
|
408
|
|
|
} |
|
409
|
|
|
} |
|
410
|
|
|
} |
|
411
|
|
|
|
|
412
|
|
|
/** |
|
413
|
|
|
* Return user agent headers. |
|
414
|
|
|
* |
|
415
|
|
|
* @return array |
|
416
|
|
|
*/ |
|
417
|
|
|
public function getUaHttpHeaders() |
|
418
|
|
|
{ |
|
419
|
|
|
return self::$uaHttpHeaders; |
|
420
|
|
|
} |
|
421
|
|
|
|
|
422
|
|
|
/** |
|
423
|
|
|
* Set the user agent. |
|
424
|
|
|
* |
|
425
|
|
|
* @param string $userAgent |
|
426
|
|
|
*/ |
|
427
|
|
|
public function setUserAgent($userAgent = null) |
|
428
|
|
|
{ |
|
429
|
|
|
if (false === empty($userAgent)) { |
|
430
|
|
|
return $this->userAgent = $userAgent; |
|
|
|
|
|
|
431
|
|
|
} else { |
|
432
|
|
|
$this->userAgent = null; |
|
433
|
|
|
foreach ($this->getUaHttpHeaders() as $altHeader) { |
|
434
|
|
|
if (false === empty($this->httpHeaders[$altHeader])) { // @todo: should use getHttpHeader(), but it would be slow. |
|
435
|
|
|
$this->userAgent .= $this->httpHeaders[$altHeader].' '; |
|
436
|
|
|
} |
|
437
|
|
|
} |
|
438
|
|
|
|
|
439
|
|
|
return $this->userAgent = (!empty($this->userAgent) ? trim($this->userAgent) : null); |
|
|
|
|
|
|
440
|
|
|
} |
|
441
|
|
|
} |
|
442
|
|
|
|
|
443
|
|
|
/** |
|
444
|
|
|
* Return the array of crawler regexs. |
|
445
|
|
|
* |
|
446
|
|
|
* @return array |
|
447
|
|
|
*/ |
|
448
|
|
|
public function getCrawlers() |
|
449
|
|
|
{ |
|
450
|
|
|
return self::$crawlers; |
|
451
|
|
|
} |
|
452
|
|
|
|
|
453
|
|
|
/** |
|
454
|
|
|
* Build the user agent regex. |
|
455
|
|
|
* |
|
456
|
|
|
* @return string |
|
457
|
|
|
*/ |
|
458
|
|
|
public function getRegex() |
|
459
|
|
|
{ |
|
460
|
|
|
return '('.implode('|', self::$crawlers).')'; |
|
461
|
|
|
} |
|
462
|
|
|
|
|
463
|
|
|
/** |
|
464
|
|
|
* Build the replacement regex. |
|
465
|
|
|
* |
|
466
|
|
|
* @return string |
|
467
|
|
|
*/ |
|
468
|
|
|
public function getIgnored() |
|
469
|
|
|
{ |
|
470
|
|
|
return '('.implode('|', self::$ignore).')'; |
|
471
|
|
|
} |
|
472
|
|
|
|
|
473
|
|
|
/** |
|
474
|
|
|
* Check user agent string against the regex. |
|
475
|
|
|
* |
|
476
|
|
|
* @param string $userAgent |
|
477
|
|
|
* |
|
478
|
|
|
* @return bool |
|
479
|
|
|
*/ |
|
480
|
|
|
public function isCrawler($userAgent = null) |
|
481
|
|
|
{ |
|
482
|
|
|
$agent = is_null($userAgent) ? $this->userAgent : $userAgent; |
|
483
|
|
|
|
|
484
|
|
|
$agent = preg_replace('/'.$this->getIgnored().'/i', '', $agent); |
|
485
|
|
|
|
|
486
|
|
|
if (trim($agent) === false) { |
|
487
|
|
|
return false; |
|
488
|
|
|
} else { |
|
489
|
|
|
$result = preg_match('/'.$this->getRegex().'/i', trim($agent), $matches); |
|
490
|
|
|
} |
|
491
|
|
|
|
|
492
|
|
|
if ($matches) { |
|
|
|
|
|
|
493
|
|
|
$this->matches = $matches; |
|
494
|
|
|
} |
|
495
|
|
|
|
|
496
|
|
|
return (bool) $result; |
|
497
|
|
|
} |
|
498
|
|
|
|
|
499
|
|
|
/** |
|
500
|
|
|
* Return the matches. |
|
501
|
|
|
* |
|
502
|
|
|
* @return string |
|
503
|
|
|
*/ |
|
504
|
|
|
public function getMatches() |
|
505
|
|
|
{ |
|
506
|
|
|
return $this->matches[0]; |
|
507
|
|
|
} |
|
508
|
|
|
} |
|
509
|
|
|
|
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: