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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html Gpl v3 or later
* @version $Id$
*
* @category Piwik_Plugins
* @package Piwik_SEO
*/
/**
* The functions below are derived/adapted from GetRank.org's
* Free PageRank Script v2.0, released under GPL.
*
* @copyright Copyright (C) 2007 - 2010 GetRank.Org All rights reserved.
* @link http://www.getrank.org/free-pagerank-script/
* @license GPL
* @package Piwik_SEO
*/
class Piwik_SEO_RankChecker
{
private $url;
private $results = array();
public function __construct($url)
{
$this->url = preg_replace('/http\:\/\//si', '', $url);
}
private function getPage($url)
{
try {
return Piwik_Http::sendHttpRequest($url, $timeout = 10, @$_SERVER['HTTP_USER_AGENT']);
} catch(Exception $e) {
return '';
}
}
public function getPagerank()
{
$chwrite = $this->CheckHash($this->HashURL($this->url));
$url="http://toolbarqueries.google.com/search?client=navclient-auto&ch=".$chwrite."&features=Rank&q=info:".$this->url."&num=100&filter=0";
$data = $this->getPage($url);
preg_match('#Rank_[0-9]:[0-9]:([0-9]+){1,}#si', $data, $p);
$value = isset($p[1]) ? $p[1] : 0;
return $value;
}
public function getAlexaRank()
{
$url = $this->url;
$xml = simplexml_load_file('http://data.alexa.com/data?cli=10&url=' . $url);
return $xml->SD->POPULARITY['TEXT'];
}
public function getDmoz()
{
$url = preg_replace('/^www\./', '', $this->url);
$url = "http://search.dmoz.org/cgi-bin/search?search=$url";
$data = $this->getPage($url);
if(preg_match('<center>No <b><a href="http://dmoz\.org/">Open Directory Project</a></b> results found</center>', $data))
{
$value = false;
}
else
{
$value = true;
}
return $value;
}
public function getYahooDirectory()
{
$url = preg_replace('/^www\./', '', $this->url);
$url = "http://search.yahoo.com/search/dir?p=$url";
$data = $this->getPage($url);
if(preg_match('No Directory Search results were found\.', $data)) {
$value = false;
} else {
$value = true;
}
return $value;
}
public function getBacklinksGoogle()
{
$url = $this->url;
$url = 'http://www.google.com/search?q=link%3A'.urlencode($url);
$data = $this->getPage($url);
preg_match('/of about \<b\>([0-9\,]+)\<\/b\>/si', $data, $p);
$value = isset($p[1]) ? $this->toInt($p[1]) : 0;
return $value;
}
public function getBacklinksYahoo()
{
$url = $this->url;
$url = 'http://siteexplorer.search.yahoo.com/search?p='.urlencode("http://$url");
$data = $this->getPage($url);
preg_match('/Inlinks \(([0-9\,]+)\)/si', $data, $p);
$value = isset($p[1]) ? $this->toInt($p[1]) : 0;
return $value;
}
public function getAge()
{
$url = preg_replace('/^www\./', '', $this->url);
$url = "http://www.who.is/whois-com/ip-address/$url";
$data = $this->getPage($url);
preg_match('#Creation Date: ([a-z0-9-]+)#si', $data, $p);
if(!isset($p[1]))
{
return null;
}
$value = time() - strtotime($p[1]);
$value = Piwik::getPrettyTimeFromSeconds($value);
return $value;
}
public function getIndexedYahoo()
{
$url = $this->url;
$url = 'http://siteexplorer.search.yahoo.com/search?p='.urlencode("http://$url");
$data = $this->getPage($url);
preg_match('/Pages \(([0-9,]{1,})\)/im', $data, $p);
$value = isset($p[1]) ? $this->toInt($p[1]) : 0;
return $value;
}
private function toInt($string)
{
return preg_replace('#[^0-9]#si', '', $string);
}
//--> for google Piwik_SEO_Ranks
private function StrToNum($Str, $Check, $Magic)
{
$Int32Unit = 4294967296; // 2^32
$length = strlen($Str);
for($i = 0; $i < $length; $i++)
{
$Check *= $Magic;
// If the float is beyond the boundaries of integer (usually +/- 2.15e+9 = 2^31),
// the result of converting to integer is undefined
// refer to http://www.php.net/manual/en/language.types.integer.php
if($Check >= $Int32Unit)
{
$Check = ($Check - $Int32Unit * (int) ($Check / $Int32Unit));
//if the check less than -2^31
$Check = ($Check < -2147483648) ? ($Check + $Int32Unit) : $Check;
}
$Check += ord($Str{$i});
}
return $Check;
}
/*
* Genearate a hash for a url
*/
private function HashURL($String)
{
$Check1 = $this->StrToNum($String, 0x1505, 0x21);
$Check2 = $this->StrToNum($String, 0, 0x1003F);
$Check1 >>= 2;
$Check1 = (($Check1 >> 4) & 0x3FFFFC0 ) | ($Check1 & 0x3F);
$Check1 = (($Check1 >> 4) & 0x3FFC00 ) | ($Check1 & 0x3FF);
$Check1 = (($Check1 >> 4) & 0x3C000 ) | ($Check1 & 0x3FFF);
$T1 = (((($Check1 & 0x3C0) << 4) | ($Check1 & 0x3C)) <<2 ) | ($Check2 & 0xF0F );
$T2 = (((($Check1 & 0xFFFFC000) << 4) | ($Check1 & 0x3C00)) << 0xA) | ($Check2 & 0xF0F0000 );
return ($T1 | $T2);
}
//--> for google Piwik_SEO_Ranks
/*
* genearate a checksum for the hash string
*/
private function CheckHash($Hashnum)
{
$CheckByte = 0;
$Flag = 0;
$HashStr = sprintf('%u', $Hashnum) ;
$length = strlen($HashStr);
for($i = $length - 1; $i >= 0; $i --)
{
$Re = $HashStr{$i};
if(1 === ($Flag % 2)) {
$Re += $Re;
$Re = (int)($Re / 10) + ($Re % 10);
}
$CheckByte += $Re;
$Flag ++;
}
$CheckByte %= 10;
if(0 !== $CheckByte)
{
$CheckByte = 10 - $CheckByte;
if(1 === ($Flag % 2) )
{
if(1 === ($CheckByte % 2))
{
$CheckByte += 9;
}
$CheckByte >>= 1;
}
}
return '7'.$CheckByte.$HashStr;
}
}
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