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<?php
rcs_id('$Id: ExternalReferrer.php,v 1.5 2007/01/20 15:54:12 rurban Exp $');
/**
* Detect external referrers
* Currently only search engines, and highlight the searched item.
*
* Todo:
* store all external referrers in (rotatable) log/db for a RecentReferrers plugin.
*/
if (!function_exists('isExternalReferrer')) { // also defined in stdlib.php
function isExternalReferrer(&$request) {
if ($referrer = $request->get('HTTP_REFERER')) {
$home = SCRIPT_NAME; // was SERVER_URL, check sister wiki's: same host but other other script url
if (substr(strtolower($referrer),0,strlen($home)) == strtolower($home)) return false;
require_once("lib/ExternalReferrer.php");
$se = new SearchEngines();
return $se->parseSearchQuery($referrer);
}
return false;
}
}
class SearchEngines {
var $searchEngines =
array(
"search.sli.sympatico.ca/" => array("engine" => "Sympatico", "query1" => "query=", "query2" => "", "url" => "http://www1.sympatico.ca/"),
"www.search123.com/cgi-bin/" => array("engine" => "Search123", "query1" => "query=", "query2" => "", "url" => "http://www.search123.com/"),
"search.dogpile.com" => array("engine" => "Dogpile", "query1" => "q=", "query2" => "", "url" => "http://www.dogpile.com"),
"vivisimo." => array("engine" => "Vivisimo", "query1" => "query=", "query2" => "", "url" => "http://www.vivisimo.com"),
"webindex.sanook.com" => array("engine" => "Sanook", "query1" => "d1=", "query2" => "", "url" => "http://www.sanook.com/"),
"tiscali.cz/search" => array("engine" => "JANAS", "query1" => "query=", "query2" => "", "url" => "http://www.tiscali.cz/"),
"teoma.com/gs?" => array("engine" => "Teoma", "query1" => "terms=", "query2" => "", "url" => "http://www.teoma.com/"),
"redbox." => array("engine" => "RedBox", "query1" => "srch=", "query2" => "", "url" => "http://www.redbox.cz/"),
"globetrotter.net" => array("engine" => "Telus Network - Globetrotter.net", "query1" => "string=", "query2" => "", "url" => "http://www.globetrotter.net/"),
"myto.com" => array("engine" => "Telus Network - myTO.com", "query1" => "string=", "query2" => "", "url" => "http://www.myto.com/"),
"alberta.com" => array("engine" => "Telus Network - Alberta.com", "query1" => "string=", "query2" => "", "url" => "http://www.alberta.com/"),
"mybc.com" => array("engine" => "Telus Network - myBC.com", "query1" => "string=", "query2" => "", "url" => "http://www.mybc.com/"),
"monstercrawler." => array("engine" => "MonsterCrawler", "query1" => "qry=", "query2" => "", "url" => "http://www.monstercrawler.com/"),
"allthesites." => array("engine" => "All the Sites", "query1" => "query=", "query2" => "", "url" => "http://www.althesites.com/"),
"suche.web" => array("engine" => "Web.de", "query1" => "su=", "query2" => "", "url" => "http://www.web.de/"),
"rediff." => array("engine" => "reDiff", "query1" => "MT=", "query2" => "", "url" => "http://www.rediff.com/"),
"evreka." => array("engine" => "Evreka", "query1" => "q=", "query2" => "", "url" => "http://evreka.suomi24.fi/"),
"findia." => array("engine" => "Findia", "query1" => "query=", "query2" => "", "url" => "http://www.findia.net/"),
"av.yahoo" => array("engine" => "Yahoo", "query1" => "p=", "query2" => "", "url" => "http://www.yahoo.com/"),
"google.yahoo" => array("engine" => "Yahoo", "query1" => "p=", "query2" => "", "url" => "http://www.yahoo.com/"),
"yahoo." => array("engine" => "Yahoo", "query1" => "q=", "query2" => "", "url" => "http://www.yahoo.com/"),
"aol." => array("engine" => "AOL Search", "query1" => "query=", "query2" => "", "url" => "http://search.aol.com/"),
"about." => array("engine" => "About", "query1" => "terms=", "query2" => "", "url" => "http://www.about.com/"),
"altavista." => array("engine" => "Altavista", "query1" => "q=", "query2" => "", "url" => "http://www.altavista.com/"),
"directhit." => array("engine" => "DirectHit", "query1" => "qry=", "query2" => "", "url" => "http://www.directhit.com/"),
"lk=webcrawler" => array("engine" => "Webcrawler", "query1" => "s=", "query2" => "", "url" => "http://www.webcrawler.com/"),
"excite." => array("engine" => "Excite", "query1" => "search=", "query2" => "", "url" => "http://www.excite.com/"),
"alltheweb." => array("engine" => "All the Web", "query1" => "query=", "query2" => "q=", "url" => "http://www.alltheweb.com/"),
"netscape." => array("engine" => "Netscape", "query1" => "search=", "query2" => "", "url" => "http://search.netscape.com/"),
"google." => array("engine" => "Google", "query1" => "q=", "query2" => "query=", "url" => "http://www.google.com/"),
"?partner=go_home" => array("engine" => "Infoseek/Go", "query1" => "Keywords=", "query2" => "", "url" => "http://www.go.com/"),
"nbci." => array("engine" => "NBCi", "query1" => "Keywords=", "query2" => "", "url" => "http://www.nbci.com/"),
"goto." => array("engine" => "GoTo", "query1" => "Keywords=", "query2" => "", "url" => "http://www.goto.com/"),
"hotbot." => array("engine" => "HotBot", "query1" => "MT=", "query2" => "", "url" => "http://hotbot.lycos.com/"),
"iwon." => array("engine" => "IWon", "query1" => "searchfor=", "query2" => "", "url" => "http://home.iwon.com/index_gen.html"),
"looksmart." => array("engine" => "Looksmart", "query1" => "key=", "query2" => "", "url" => "http://www.looksmart.com/"),
"lycos." => array("engine" => "Lycos", "query1" => "query=", "query2" => "", "url" => "http://www.lycos.com/"),
"msn." => array("engine" => "MSN", "query1" => "q=", "query2" => "", "url" => "http://search.msn.com/"),
"dmoz." => array("engine" => "Dmoz", "query1" => "search=", "query2" => "", "url" => "http://www.dmoz.org/"),
);
/**
* parseSearchQuery(url)
* Parses the passed refering url looking for search engine data. If search info is found,
* the method determines the name of the search engine, it's URL, and the search keywords
* used in the search. This information is returned in an associative array with the following
* keys:
* @returns array engine, engine_url, query
* @public
*/
function parseSearchQuery($url) {
// test local referrers
if (DEBUG & _DEBUG_REMOTE) {
$this->searchEngines[strtolower(SERVER_URL)] = array("engine" => "DEBUG", "query1" => "s=", "query2" => "", "url" => SCRIPT_NAME);
$this->searchEngines['http://localhost'] = array("engine" => "DEBUG", "query1" => "s=", "query2" => "", "url" => SCRIPT_NAME);
}
$url = strtolower($url);
$ref = $url;
while (list($key,$var) = @each($this->searchEngines)) {
if (strstr($ref, $key)) {
unset($ref);
$ref["engine"] = $var["engine"];
$query1 = $var["query1"];
$query2 = $var["query2"];
$ref["engine_url"] = $var["url"];
break;
}
}
reset($this->searchEngines);
if ($ref == $url) {
return false;
}
$url = @parse_url(strtolower($url));
if (!empty($url["query"]))
$url = $url["query"];
if ($query1 and @stristr($url, $query1)) {
$query = @explode($query1, $url);
}
else if ($query2 and @stristr($url, $query2)) {
$query = explode($query2, $url);
}
if (!empty($query)) {
$query = @explode("&", $query[1]);
$ref["query"] = @urldecode($query[0]);
}
return $ref;
}
}
// $Log: ExternalReferrer.php,v $
// Revision 1.5 2007/01/20 15:54:12 rurban
// Minor optimization and added localhost for debugging
//
// Revision 1.4 2007/01/07 18:42:29 rurban
// Update comment only
//
// Revision 1.3 2004/10/12 14:22:14 rurban
// lib/ExternalReferrer.php:99: Notice[8]: Undefined index: query
//
// Revision 1.2 2004/09/26 14:55:55 rurban
// fixed warning
//
// Revision 1.1 2004/09/26 12:20:28 rurban
// Detect external referrers, handle search engines
//
// For emacs users
// Local Variables:
// mode: php
// tab-width: 8
// c-basic-offset: 4
// c-hanging-comment-ender-p: nil
// indent-tabs-mode: nil
// End:
?>
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