      1: <?php
      2:
      3: /**
      4:  * A utility class for carrying out various tasks on HTTP user agent strings
      5:  *
      6:  * @package alpha::util
      7:  * @since 1.0
      8:  * @author John Collins <dev@alphaframework.org>
      9:  * @version $Id: AlphaAgentUtils.inc 1496 2012-02-12 20:32:21Z alphadev $
     10:  * @license http://www.opensource.org/licenses/bsd-license.php The BSD License
     11:  * @copyright Copyright (c) 2012, John Collins (founder of Alpha Framework).
     12:  * All rights reserved.
     13:  *
     14:  * <pre>
     15:  * Redistribution and use in source and binary forms, with or
     16:  * without modification, are permitted provided that the
     17:  * following conditions are met:
     18:  *
     19:  * * Redistributions of source code must retain the above
     20:  *   copyright notice, this list of conditions and the
     21:  *   following disclaimer.
     22:  * * Redistributions in binary form must reproduce the above
     23:  *   copyright notice, this list of conditions and the
     24:  *   following disclaimer in the documentation and/or other
     25:  *   materials provided with the distribution.
     26:  * * Neither the name of the Alpha Framework nor the names
     27:  *   of its contributors may be used to endorse or promote
     28:  *   products derived from this software without specific
     29:  *   prior written permission.
     30:  *
     31:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
     32:  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
     33:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     34:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     35:  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
     36:  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     37:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     38:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     39:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     40:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     41:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     42:  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     43:  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     44:  * </pre>
     45:  *
     46:  */
     47: class AlphaAgentUtils {
     48:
     49:     /**
     50:      * An array of partial user agent strings belonging to well known web spider bots
     51:      *
     52:      * @var array
     53:      * @since 1.0
     54:      */
     55:     private static $bots = array(
     56:         'ia_archiver',
     57:         'Scooter/',
     58:         'Ask Jeeves',
     59:         'Baiduspider+(',
     60:         'bingbot/',
     61:         'Disqus/',
     62:         'Exabot/',
     63:         'FAST Enterprise Crawler',
     64:         'FAST-WebCrawler/',
     65:         'http://www.neomo.de/',
     66:         'Gigabot/',
     67:         'Mediapartners-Google',
     68:         'Google Desktop',
     69:         'Feedfetcher-Google',
     70:         'Googlebot',
     71:         'heise-IT-Markt-Crawler',
     72:         'heritrix/1.',
     73:         'ibm.com/cs/crawler',
     74:         'ICCrawler - ICjobs',
     75:         'ichiro/2',
     76:         'MJ12bot/',
     77:         'MetagerBot/',
     78:         'msnbot-NewsBlogs/',
     79:         'msnbot/',
     80:         'msnbot-media/',
     81:         'NG-Search/',
     82:         'http://lucene.apache.org/nutch/',
     83:         'NutchCVS/',
     84:         'OmniExplorer_Bot/',
     85:         'online link validator',
     86:         'psbot/0',
     87:         'Seekbot/',
     88:         'Sensis Web Crawler',
     89:         'SEO search Crawler/',
     90:         'Seoma [SEO Crawler]',
     91:         'SEOsearch/',
     92:         'Snappy/1.1 ( http://www.urltrends.com/ )',
     93:         'http://www.tkl.iis.u-tokyo.ac.jp/~crawler/',
     94:         'SynooBot/',
     95:         'crawleradmin.t-info@telekom.de',
     96:         'TurnitinBot/',
     97:         'voyager/1.0',
     98:         'W3 SiteSearch Crawler',
     99:         'W3C-checklink/',
    100:         'W3C_*Validator',
    101:         'http://www.WISEnutbot.com',
    102:         'yacybot',
    103:         'Yahoo-MMCrawler/',
    104:         'Yahoo! DE Slurp',
    105:         'Yahoo! Slurp',
    106:         'YahooSeeker/'
    107:         );
    108:
    109:     /**
    110:      * Static method to check if the provided user agent string matches any of the known user
    111:      * agent strings in the $bots array on this class.
    112:      *
    113:      * @param string $userAgent The user agent string that we want to check.
    114:      * @return boolean
    115:      * @since 1.0
    116:      */
    117:     public static function isBot($userAgent) {
    118:         $isBot = false;
    119:
    120:         foreach (AlphaAgentUtils::$bots as $botName){
    121:             if (stristr($userAgent, $botName) == true) {
    122:                 $isBot = true;
    123:                 break;
    124:             }
    125:         }
    126:
    127:         return $isBot;
    128:     }
    129: }
    130:
    131:
    132: ?>
    133: