([^<]*?)<\/title>/is', $externalURIBody, $titles); $title = $titles[1]; unset($titles); // RETURN: no title on page if ($title == null) { return false; } //limit title length? $title=(mb_strlen($title)>100)?mb_substr($title,0,99):$title; $agent=$_SERVER['HTTP_USER_AGENT']; $logger->info('title:'.$title); $logger->info('user agent:'.$agent); $contents = $j->getBody(); $dom = new DOMDocument(); @$dom->loadHTML($contents); $xml = @simplexml_import_dom($dom); $path = "//body//a[@href=\"$westdcURI\"][1]"; $link = $this->xpath1($xml, $path); $context = $link; // Searching for the smallest block element containing the link while (! in_array(strtolower($context->getName()), $this->BLOCK_ELEMENTS)) { $path .= "/.."; $context = $this->xpath1($xml, $path); } // Expanding context $previous = $this->xpath1($xml, "$path/preceding-sibling::*[position()=1]"); $next = $this->xpath1($xml, "$path/following-sibling::*[position()=1]"); // Join this all $ret = ""; if ($previous) { $ret = $previous->asXML(); } $ret .= " " . $context->asXML() . " "; if ($next) { $ret .= " " . $next->asXML(); } $ret = preg_replace('/[\s|\r|\n]+/im', ' ', $ret); $ret = preg_replace('/ <(h1|h2|h3|h4|h5|h6|p|th|td|li|dt|dd|pre|caption|input|textarea|button|body|borrowed|from|wordpress)[^>]*>/is', ' ', $ret); $stripper = new Zend_Filter_StripTags('a', 'href'); $ret = $stripper->filter($ret); //保存到数据库，最多只保留一个PINGBACK? $sql="insert into comments (type,author,url,ip,content,agent,uuid) values('pingback',?,?,?,?,?,?)"; $db->query($sql,array($title,$externalURI,$ip,$ret,$agent,$uuid)); return "OK"; } /** * Queries SimpleXMLElement with XPath and return the first result or null if found nothing * * @param SimpleXMLElement $dom SimpleXMLElement object to query * @param string $xpath the query * @return SimpleXMLElement | null resulting element */ private function xpath1($dom, $xpath) { $res = $dom->xpath($xpath); if (count($res) < 1) { return null; } return $res[0]; } } ?>

info('Informational message'); $logger->info('extern url:'.$externalURI); //判断uuid $uuid=explode('/',$westdcURI); $uuid=$uuid[count($uuid)-1]; $db=Zend_Registry::get('db'); $sql="select count(*) as count from metadata where uuid=?"; $rs=$db->fetchRow($sql,array($uuid)); //不存在此数据 if ($rs['count']==0) return false; //anti-spam //来源地址和用户发送的IP地址相同 $ip=$_SERVER['REMOTE_ADDR']; $p=parse_url($externalURI); $ip1=gethostbyname($p['host']); $logger->info('user ip:'.$ip); //if ($ip<>$ip1) return false; // 限制：来源中包含目标地址 $i = new Zend_Http_Client($externalURI); $j = $i->request(Zend_Http_Client::GET); // RETURN: our source blog post does not exist on remote server if (($pos = strpos(($externalURIBody = $j->getBody()), $westdcURI)) === false) { return false; } //获取标题和内容 // get the title of the remote blog post preg_match('/([^<]*?)<\/title>/is', $externalURIBody, $titles); $title = $titles[1]; unset($titles); // RETURN: no title on page if ($title == null) { return false; } //limit title length? $title=(mb_strlen($title)>100)?mb_substr($title,0,99):$title; $agent=$_SERVER['HTTP_USER_AGENT']; $logger->info('title:'.$title); $logger->info('user agent:'.$agent); $contents = $j->getBody(); $dom = new DOMDocument(); @$dom->loadHTML($contents); $xml = @simplexml_import_dom($dom); $path = "//body//a[@href=\"$westdcURI\"][1]"; $link = $this->xpath1($xml, $path); $context = $link; // Searching for the smallest block element containing the link while (! in_array(strtolower($context->getName()), $this->BLOCK_ELEMENTS)) { $path .= "/.."; $context = $this->xpath1($xml, $path); } // Expanding context $previous = $this->xpath1($xml, "$path/preceding-sibling::*[position()=1]"); $next = $this->xpath1($xml, "$path/following-sibling::*[position()=1]"); // Join this all $ret = ""; if ($previous) { $ret = $previous->asXML(); } $ret .= " " . $context->asXML() . " "; if ($next) { $ret .= " " . $next->asXML(); } $ret = preg_replace('/[\s|\r|\n]+/im', ' ', $ret); $ret = preg_replace('/ <(h1|h2|h3|h4|h5|h6|p|th|td|li|dt|dd|pre|caption|input|textarea|button|body|borrowed|from|wordpress)[^>]*>/is', ' ', $ret); $stripper = new Zend_Filter_StripTags('a', 'href'); $ret = $stripper->filter($ret); //保存到数据库，最多只保留一个PINGBACK? $sql="insert into comments (type,author,url,ip,content,agent,uuid) values('pingback',?,?,?,?,?,?)"; $db->query($sql,array($title,$externalURI,$ip,$ret,$agent,$uuid)); return "OK"; } /** * Queries SimpleXMLElement with XPath and return the first result or null if found nothing * * @param SimpleXMLElement $dom SimpleXMLElement object to query * @param string $xpath the query * @return SimpleXMLElement | null resulting element */ private function xpath1($dom, $xpath) { $res = $dom->xpath($xpath); if (count($res) < 1) { return null; } return $res[0]; } } ?>