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friendica/mod/parse_url.php

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PHP
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<?php
/**
* @file mod/parse_url.php
*
* @todo https://developers.google.com/+/plugins/snippet/
*
* @verbatim
* <meta itemprop="name" content="Toller Titel">
* <meta itemprop="description" content="Eine tolle Beschreibung">
* <meta itemprop="image" content="http://maple.libertreeproject.org/images/tree-icon.png">
*
* <body itemscope itemtype="http://schema.org/Product">
* <h1 itemprop="name">Shiny Trinket</h1>
* <img itemprop="image" src="{image-url}" />
* <p itemprop="description">Shiny trinkets are shiny.</p>
* </body>
* @endverbatim
*/
if(!function_exists('deletenode')) {
function deletenode(&$doc, $node)
{
$xpath = new DomXPath($doc);
$list = $xpath->query("//".$node);
foreach ($list as $child)
$child->parentNode->removeChild($child);
}
}
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($complete);
}
function parseurl_getsiteinfo_cached($url, $no_guessing = false, $do_oembed = true) {
if ($url == "")
return false;
$r = q("SELECT * FROM `parsed_url` WHERE `url` = '%s' AND `guessing` = %d AND `oembed` = %d",
dbesc(normalise_link($url)), intval(!$no_guessing), intval($do_oembed));
if ($r)
$data = $r[0]["content"];
if (!is_null($data)) {
$data = unserialize($data);
return $data;
}
$data = parseurl_getsiteinfo($url, $no_guessing, $do_oembed);
q("INSERT INTO `parsed_url` (`url`, `guessing`, `oembed`, `content`) VALUES ('%s', %d, %d, '%s')",
dbesc(normalise_link($url)), intval(!$no_guessing), intval($do_oembed), dbesc(serialize($data)));
return $data;
}
function parseurl_getsiteinfo($url, $no_guessing = false, $do_oembed = true, $count = 1) {
require_once("include/network.php");
$a = get_app();
$siteinfo = array();
if ($count > 10) {
logger("parseurl_getsiteinfo: Endless loop detected for ".$url, LOGGER_DEBUG);
return($siteinfo);
}
$url = trim($url, "'");
$url = trim($url, '"');
$url = original_url($url);
$siteinfo["url"] = $url;
$siteinfo["type"] = "link";
$stamp1 = microtime(true);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 3);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
//curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
$header = curl_exec($ch);
$curl_info = @curl_getinfo($ch);
$http_code = $curl_info['http_code'];
curl_close($ch);
$a->save_timestamp($stamp1, "network");
if ((($curl_info['http_code'] == "301") OR ($curl_info['http_code'] == "302") OR ($curl_info['http_code'] == "303") OR ($curl_info['http_code'] == "307"))
AND (($curl_info['redirect_url'] != "") OR ($curl_info['location'] != ""))) {
if ($curl_info['redirect_url'] != "")
$siteinfo = parseurl_getsiteinfo($curl_info['redirect_url'], $no_guessing, $do_oembed, ++$count);
else
$siteinfo = parseurl_getsiteinfo($curl_info['location'], $no_guessing, $do_oembed, ++$count);
return($siteinfo);
}
// if the file is too large then exit
if ($curl_info["download_content_length"] > 1000000)
return($siteinfo);
// if it isn't a HTML file then exit
if (($curl_info["content_type"] != "") AND !strstr(strtolower($curl_info["content_type"]),"html"))
return($siteinfo);
if ($do_oembed) {
require_once("include/oembed.php");
$oembed_data = oembed_fetch_url($url);
if ($oembed_data->type != "error")
$siteinfo["type"] = $oembed_data->type;
if (($oembed_data->type == "link") AND ($siteinfo["type"] != "photo")) {
if (isset($oembed_data->title))
$siteinfo["title"] = $oembed_data->title;
if (isset($oembed_data->description))
$siteinfo["text"] = trim($oembed_data->description);
if (isset($oembed_data->thumbnail_url))
$siteinfo["image"] = $oembed_data->thumbnail_url;
}
}
$stamp1 = microtime(true);
// Now fetch the body as well
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 0);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
$header = curl_exec($ch);
$curl_info = @curl_getinfo($ch);
$http_code = $curl_info['http_code'];
curl_close($ch);
$a->save_timestamp($stamp1, "network");
// Fetch the first mentioned charset. Can be in body or header
$charset = "";
if (preg_match('/charset=(.*?)['."'".'"\s\n]/', $header, $matches))
$charset = trim(trim(trim(array_pop($matches)), ';,'));
if ($charset == "")
$charset = "utf-8";
$pos = strpos($header, "\r\n\r\n");
if ($pos)
$body = trim(substr($header, $pos));
else
$body = $header;
if (($charset != '') AND (strtoupper($charset) != "UTF-8")) {
logger("parseurl_getsiteinfo: detected charset ".$charset, LOGGER_DEBUG);
//$body = mb_convert_encoding($body, "UTF-8", $charset);
$body = iconv($charset, "UTF-8//TRANSLIT", $body);
}
$body = mb_convert_encoding($body, 'HTML-ENTITIES', "UTF-8");
$doc = new DOMDocument();
@$doc->loadHTML($body);
deletenode($doc, 'style');
deletenode($doc, 'script');
deletenode($doc, 'option');
deletenode($doc, 'h1');
deletenode($doc, 'h2');
deletenode($doc, 'h3');
deletenode($doc, 'h4');
deletenode($doc, 'h5');
deletenode($doc, 'h6');
deletenode($doc, 'ol');
deletenode($doc, 'ul');
$xpath = new DomXPath($doc);
$list = $xpath->query("//meta[@content]");
foreach ($list as $node) {
$attr = array();
if ($node->attributes->length)
foreach ($node->attributes as $attribute)
$attr[$attribute->name] = $attribute->value;
if (@$attr["http-equiv"] == 'refresh') {
$path = $attr["content"];
$pathinfo = explode(";", $path);
$content = "";
foreach ($pathinfo AS $value) {
if (substr(strtolower($value), 0, 4) == "url=")
$content = substr($value, 4);
}
if ($content != "") {
$siteinfo = parseurl_getsiteinfo($content, $no_guessing, $do_oembed, ++$count);
return($siteinfo);
}
}
}
//$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;
$attr["content"] = trim(html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8"));
if ($attr["content"] != "")
switch (strtolower($attr["name"])) {
case "fulltitle":
$siteinfo["title"] = $attr["content"];
break;
case "description":
$siteinfo["text"] = $attr["content"];
break;
case "thumbnail":
$siteinfo["image"] = $attr["content"];
break;
case "twitter:image":
$siteinfo["image"] = $attr["content"];
break;
case "twitter:image:src":
$siteinfo["image"] = $attr["content"];
break;
case "twitter:card":
if (($siteinfo["type"] == "") OR ($attr["content"] == "photo"))
$siteinfo["type"] = $attr["content"];
break;
case "twitter:description":
$siteinfo["text"] = $attr["content"];
break;
case "twitter:title":
$siteinfo["title"] = $attr["content"];
break;
case "dc.title":
$siteinfo["title"] = $attr["content"];
break;
case "dc.description":
$siteinfo["text"] = $attr["content"];
break;
case "keywords":
$keywords = explode(",", $attr["content"]);
break;
case "news_keywords":
$keywords = explode(",", $attr["content"]);
break;
}
if ($siteinfo["type"] == "summary")
$siteinfo["type"] = "link";
}
if (isset($keywords)) {
$siteinfo["keywords"] = array();
foreach ($keywords as $keyword)
if (!in_array(trim($keyword), $siteinfo["keywords"]))
$siteinfo["keywords"][] = trim($keyword);
}
//$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;
$attr["content"] = trim(html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8"));
if ($attr["content"] != "")
switch (strtolower($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"] == "") AND !$no_guessing) {
$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;
$src = completeurl($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 {
$src = completeurl($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 ((@$siteinfo["text"] == "") AND (@$siteinfo["title"] != "") AND !$no_guessing) {
$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));
$siteinfo["text"] = trim(html_entity_decode(substr($text,0,350), ENT_QUOTES, "UTF-8").'...');
}
}
logger("parseurl_getsiteinfo: Siteinfo for ".$url." ".print_r($siteinfo, true), LOGGER_DEBUG);
call_hooks('getsiteinfo', $siteinfo);
return($siteinfo);
}
function arr_add_hashes(&$item,$k) {
$item = '#' . $item;
}
function parse_url_content(&$a) {
$text = null;
$str_tags = '';
$textmode = false;
if(local_user() && (! feature_enabled(local_user(),'richtext')))
$textmode = true;
//if($textmode)
$br = (($textmode) ? "\n" : '<br />');
if(x($_GET,'binurl'))
$url = trim(hex2bin($_GET['binurl']));
else
$url = trim($_GET['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,'arr_add_hashes');
$str_tags = $br . implode(' ',$arr_tags) . $br;
}
}
// add url scheme if missing
$arrurl = parse_url($url);
if (!x($arrurl, 'scheme')) {
if (x($arrurl, 'host'))
$url = "http:".$url;
else
$url = "http://".$url;
}
logger('parse_url: ' . $url);
if($textmode)
$template = '[bookmark=%s]%s[/bookmark]%s';
else
$template = "<a class=\"bookmark\" href=\"%s\" >%s</a>%s";
$arr = array('url' => $url, 'text' => '');
call_hooks('parse_link', $arr);
if(strlen($arr['text'])) {
echo $arr['text'];
killme();
}
if($url && $title && $text) {
$title = str_replace(array("\r","\n"),array('',''),$title);
if($textmode)
$text = '[quote]' . trim($text) . '[/quote]' . $br;
else {
$text = '<blockquote>' . htmlspecialchars(trim($text)) . '</blockquote><br />';
$title = htmlspecialchars($title);
}
$result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
logger('parse_url (unparsed): returns: ' . $result);
echo $result;
killme();
}
$siteinfo = parseurl_getsiteinfo($url);
// if ($textmode) {
// require_once("include/items.php");
//
// echo add_page_info_data($siteinfo);
// killme();
// }
$url= $siteinfo["url"];
// If the link contains BBCode stuff, make a short link out of this to avoid parsing problems
if (strpos($url, '[') OR strpos($url, ']')) {
require_once("include/network.php");
$url = short_link($url);
}
$sitedata = "";
if($siteinfo["title"] != "") {
$text = $siteinfo["text"];
$title = $siteinfo["title"];
}
$image = "";
if (($siteinfo["type"] != "video") AND (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 $imagedata) {
if($textmode)
$image .= '[img='.$imagedata["width"].'x'.$imagedata["height"].']'.$imagedata["src"].'[/img]' . "\n";
else
$image .= '<img height="'.$imagedata["height"].'" width="'.$imagedata["width"].'" src="'.$imagedata["src"].'" alt="photo" /><br />';
$total_images ++;
if($max_images && $max_images >= $total_images)
break;
}
}
if(strlen($text)) {
if($textmode)
$text = '[quote]'.trim($text).'[/quote]';
else
$text = '<blockquote>'.htmlspecialchars(trim($text)).'</blockquote>';
}
if($image)
$text = $br.$br.$image.$text;
else
$text = $br.$text;
$title = str_replace(array("\r","\n"),array('',''),$title);
$result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
logger('parse_url: returns: ' . $result);
$sitedata .= trim($result);
if (($siteinfo["type"] == "video") AND ($url != ""))
echo "[class=type-video]".$sitedata."[/class]";
elseif (($siteinfo["type"] != "photo"))
echo "[class=type-link]".$sitedata."[/class]";
else
echo "[class=type-photo]".$title.$br.$image."[/class]";
killme();
}
?>
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