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: