<?php
namespace Zotlabs\Module;
class Linkinfo extends \Zotlabs\Web\Controller {
function get() {
logger('linkinfo: ' . print_r($_REQUEST,true));
$text = null;
$str_tags = '';
$process_oembed = true;
$br = "\n";
if(x($_GET,'binurl'))
$url = trim(hex2bin($_GET['binurl']));
else
$url = trim($_GET['url']);
if(substr($url,0,1) === '!') {
$process_oembed = false;
$url = substr($url,1);
}
$url = strip_zids($url);
if((substr($url,0,1) != '/') && (substr($url,0,4) != 'http'))
$url = 'http://' . $url;
if($_GET['title'])
$title = strip_tags(trim($_GET['title']));
if($_GET['description'])
$text = strip_tags(trim($_GET['description']));
if($_GET['tags']) {
$arr_tags = str_getcsv($_GET['tags']);
if(count($arr_tags)) {
array_walk($arr_tags,'self::arr_add_hashes');
$str_tags = $br . implode(' ',$arr_tags) . $br;
}
}
logger('linkinfo: ' . $url);
$result = z_fetch_url($url,false,0,array('novalidate' => true, 'nobody' => true));
if($result['success']) {
$hdrs=array();
$h = explode("\n",$result['header']);
foreach ($h as $l) {
list($k,$v) = array_map("trim", explode(":", trim($l), 2));
$hdrs[strtolower($k)] = $v;
}
if (array_key_exists('content-type', $hdrs))
$type = $hdrs['content-type'];
if($type) {
$zrl = is_matrix_url($url);
if(stripos($type,'image/') !== false) {
if($zrl)
echo $br . '[zmg]' . $url . '[/zmg]' . $br;
else
echo $br . '[img]' . $url . '[/img]' . $br;
killme();
}
if(stripos($type,'video/') !== false) {
if($zrl)
echo $br . '[zvideo]' . $url . '[/zvideo]' . $br;
else
echo $br . '[video]' . $url . '[/video]' . $br;
killme();
}
if(stripos($type,'audio/') !== false) {
if($zrl)
echo $br . '[zaudio]' . $url . '[/zaudio]' . $br;
else
echo $br . '[audio]' . $url . '[/audio]' . $br;
killme();
}
if(strtolower($type) === 'application/pdf' || strtolower($type) === 'application/x-pdf') {
echo $br . '[embed]' . $url . '[/embed]' . $br;
killme();
}
}
}
$template = $br . '#^[url=%s]%s[/url]%s' . $br;
$arr = array('url' => $url, 'text' => '');
call_hooks('parse_link', $arr);
if(strlen($arr['text'])) {
echo $arr['text'];
killme();
}
if($process_oembed) {
$x = oembed_process($url);
if($x) {
echo $x;
killme();
}
}
if($url && $title && $text) {
$text = $br . '[quote]' . trim($text) . '[/quote]' . $br;
$title = str_replace(array("\r","\n"),array('',''),$title);
$result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
logger('linkinfo (unparsed): returns: ' . $result);
echo $result;
killme();
}
$siteinfo = self::parseurl_getsiteinfo($url);
// If the site uses this platform, use zrl rather than url so they get zids sent to them by default
if(is_matrix_url($url))
$template = str_replace('url','zrl',$template);
if($siteinfo["title"] == "") {
echo sprintf($template,$url,$url,'') . $str_tags;
killme();
} else {
$text = $siteinfo["text"];
$title = $siteinfo["title"];
}
$image = "";
if(sizeof($siteinfo["images"]) > 0){
/* Execute below code only if image is present in siteinfo */
$total_images = 0;
$max_images = get_config('system','max_bookmark_images');
if($max_images === false)
$max_images = 2;
else
$max_images = intval($max_images);
foreach ($siteinfo["images"] as $imagedata) {
if ($url) {
$image .= sprintf('[url=%s]', $url);
}
$image .= '[img='.$imagedata["width"].'x'.$imagedata["height"].']'.$imagedata["src"].'[/img]';
if ($url) {
$image .= '[/url]';
}
$image .= "\n";
$total_images ++;
if($max_images && $max_images >= $total_images)
break;
}
}
if(strlen($text)) {
$text = $br.'[quote]'.trim($text).'[/quote]'.$br ;
}
if($image) {
$text = $br.$br.$image.$text;
}
$title = str_replace(array("\r","\n"),array('',''),$title);
$result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
logger('linkinfo: returns: ' . $result, LOGGER_DEBUG);
echo trim($result);
killme();
}
public static function deletexnode(&$doc, $node) {
$xpath = new \DomXPath($doc);
$list = $xpath->query("//".$node);
foreach ($list as $child)
$child->parentNode->removeChild($child);
}
public static function completeurl($url, $scheme) {
$urlarr = parse_url($url);
if (isset($urlarr["scheme"]))
return($url);
$schemearr = parse_url($scheme);
$complete = $schemearr["scheme"]."://".$schemearr["host"];
if ($schemearr["port"] != "")
$complete .= ":".$schemearr["port"];
if(strpos($urlarr['path'],'/') !== 0)
$complete .= '/';
$complete .= $urlarr["path"];
if ($urlarr["query"] != "")
$complete .= "?".$urlarr["query"];
if ($urlarr["fragment"] != "")
$complete .= "#".$urlarr["fragment"];
return($complete);
}
public static function parseurl_getsiteinfo($url) {
$siteinfo = array();
$result = z_fetch_url($url,false,0,array('novalidate' => true));
if(! $result['success'])
return $siteinfo;
$header = $result['header'];
$body = $result['body'];
$body = mb_convert_encoding($body, 'UTF-8', (preg_match('/<meta\s+http-equiv=.content-type.+; charset=([^"|\']+)/i', $body, $o) ? $o[1] : 'UTF-8'));
$body = mb_convert_encoding($body, 'HTML-ENTITIES', "UTF-8");
$doc = new \DOMDocument();
@$doc->loadHTML($body);
self::deletexnode($doc, 'style');
self::deletexnode($doc, 'script');
self::deletexnode($doc, 'option');
self::deletexnode($doc, 'h1');
self::deletexnode($doc, 'h2');
self::deletexnode($doc, 'h3');
self::deletexnode($doc, 'h4');
self::deletexnode($doc, 'h5');
self::deletexnode($doc, 'h6');
self::deletexnode($doc, 'ol');
self::deletexnode($doc, 'ul');
$xpath = new \DomXPath($doc);
//$list = $xpath->query("head/title");
$list = $xpath->query("//title");
foreach ($list as $node)
$siteinfo["title"] = html_entity_decode($node->nodeValue, ENT_QUOTES, "UTF-8");
//$list = $xpath->query("head/meta[@name]");
$list = $xpath->query("//meta[@name]");
foreach ($list as $node) {
$attr = array();
if ($node->attributes->length)
foreach ($node->attributes as $attribute)
$attr[$attribute->name] = $attribute->value;
$attr["content"] = html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8");
switch (strtolower($attr["name"])) {
case 'generator':
$siteinfo['generator'] = $attr['content'];
break;
case "fulltitle":
$siteinfo["title"] = $attr["content"];
break;
case "description":
$siteinfo["text"] = $attr["content"];
break;
case "dc.title":
$siteinfo["title"] = $attr["content"];
break;
case "dc.description":
$siteinfo["text"] = $attr["content"];
break;
}
}
//$list = $xpath->query("head/meta[@property]");
$list = $xpath->query("//meta[@property]");
foreach ($list as $node) {
$attr = array();
if ($node->attributes->length)
foreach ($node->attributes as $attribute)
$attr[$attribute->name] = $attribute->value;
$attr["content"] = html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8");
switch (strtolower($attr["property"])) {
case "og:image":
$siteinfo["image"] = $attr["content"];
break;
case "og:title":
$siteinfo["title"] = $attr["content"];
break;
case "og:description":
$siteinfo["text"] = $attr["content"];
break;
}
}
if ($siteinfo["image"] == "") {
$list = $xpath->query("//img[@src]");
foreach ($list as $node) {
$attr = array();
if ($node->attributes->length)
foreach ($node->attributes as $attribute)
$attr[$attribute->name] = $attribute->value;
$src = self::completeurl($attr["src"], $url);
$photodata = @getimagesize($src);
if (($photodata) && ($photodata[0] > 150) and ($photodata[1] > 150)) {
if ($photodata[0] > 300) {
$photodata[1] = round($photodata[1] * (300 / $photodata[0]));
$photodata[0] = 300;
}
if ($photodata[1] > 300) {
$photodata[0] = round($photodata[0] * (300 / $photodata[1]));
$photodata[1] = 300;
}
$siteinfo["images"][] = array("src"=>$src,
"width"=>$photodata[0],
"height"=>$photodata[1]);
}
}
} else {
$src = self::completeurl($siteinfo["image"], $url);
unset($siteinfo["image"]);
$photodata = @getimagesize($src);
if (($photodata) && ($photodata[0] > 10) and ($photodata[1] > 10))
$siteinfo["images"][] = array("src"=>$src,
"width"=>$photodata[0],
"height"=>$photodata[1]);
}
if ($siteinfo["text"] == "") {
$text = "";
$list = $xpath->query("//div[@class='article']");
foreach ($list as $node)
if (strlen($node->nodeValue) > 40)
$text .= " ".trim($node->nodeValue);
if ($text == "") {
$list = $xpath->query("//div[@class='content']");
foreach ($list as $node)
if (strlen($node->nodeValue) > 40)
$text .= " ".trim($node->nodeValue);
}
// If none text was found then take the paragraph content
if ($text == "") {
$list = $xpath->query("//p");
foreach ($list as $node)
if (strlen($node->nodeValue) > 40)
$text .= " ".trim($node->nodeValue);
}
if ($text != "") {
$text = trim(str_replace(array("\n", "\r"), array(" ", " "), $text));
while (strpos($text, " "))
$text = trim(str_replace(" ", " ", $text));
$siteinfo["text"] = html_entity_decode(substr($text,0,350), ENT_QUOTES, "UTF-8").'...';
}
}
return($siteinfo);
}
private static function arr_add_hashes(&$item,$k) {
$item = '#' . $item;
}
}
