friendica/mod/parse_url.php

288 lines
7.3 KiB
PHP

<?php
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 parseurl_getsiteinfo($url) {
$siteinfo = array();
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_NOBODY, 0);
curl_setopt($ch, CURLOPT_TIMEOUT, 3);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch,CURLOPT_USERAGENT,'Opera/9.64(Windows NT 5.1; U; de) Presto/2.1.1');
$header = curl_exec($ch);
curl_close($ch);
if (preg_match('/charset=(.*?)\n/', $header, $matches))
$charset = trim(array_pop($matches));
else
$charset = "utf-8";
$pos = strpos($header, "\r\n\r\n");
if ($pos)
$body = trim(substr($header, $pos));
else
$body = $header;
$body = mb_convert_encoding($body, "UTF-8", $charset);
$body = mb_convert_encoding($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 = $xpath->query("head/title");
foreach ($list as $node)
$siteinfo["title"] = html_entity_decode($node->nodeValue, ENT_QUOTES, "UTF-8");
$list = $xpath->query("head/meta[@name]");
foreach ($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 "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 = $xpath->query("head/meta[@property]");
foreach ($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"] == "") {
require_once('include/Photo.php');
$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;
// guess mimetype from headers or filename
$type = guess_image_type($attr["src"],true);
$i = fetch_url($attr["src"]);
$ph = new Photo($i, $type);
if(($ph->getWidth() > 200) and ($ph->getHeight() > 200))
$siteinfo["image"] = $attr["src"];
}
}
if ($siteinfo["text"] == "") {
$text = "";
$list = $xpath->query("//div[@class='article']");
foreach ($list as $node)
$text .= " ".trim($node->nodeValue);
if ($text == "") {
$list = $xpath->query("//div[@class='content']");
foreach ($list as $node)
$text .= " ".trim($node->nodeValue);
}
// If none text was found then take the paragraph content
if ($text == "") {
$list = $xpath->query("//p");
foreach ($list as $node)
$text .= " ".trim($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($siteinfo);
}
function arr_add_hashes(&$item,$k) {
$item = '#' . $item;
}
function parse_url_content(&$a) {
$text = null;
$str_tags = '';
$textmode = false;
if(local_user() && intval(get_pconfig(local_user(),'system','plaintext')))
$textmode = true;
if($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;
}
}
logger('parse_url: ' . $url);
if($textmode)
$template = $br . '[bookmark=%s]%s[/bookmark]%s' . $br;
else
$template = "<br /><a class=\"bookmark\" href=\"%s\" >%s</a>%s<br />";
$arr = array('url' => $url, 'text' => '');
call_hooks('parse_link', $arr);
if(strlen($arr['text'])) {
echo $arr['text'];
killme();
}
if($url && $title && $text) {
if($textmode)
$text = $br . $br . '[quote]' . trim($text) . '[/quote]' . $br;
else
$text = '<br /><br /><blockquote>' . trim($text) . '</blockquote><br />';
$title = str_replace(array("\r","\n"),array('',''),$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($siteinfo["title"] == "") {
echo sprintf($template,$url,$url,'') . $str_tags;
killme();
} else {
$image = $siteinfo["image"];
$text = $siteinfo["text"];
$title = $siteinfo["title"];
}
if ($image != "") {
$i = fetch_url($image);
if($i) {
require_once('include/Photo.php');
// guess mimetype from headers or filename
$type = guess_image_type($image,true);
$ph = new Photo($i, $type);
if($ph->is_valid()) {
if($ph->getWidth() > 300 || $ph->getHeight() > 300) {
$ph->scaleImage(300);
$new_width = $ph->getWidth();
$new_height = $ph->getHeight();
if($textmode)
$image = $br . $br . '[img=' . $new_width . 'x' . $new_height . ']' . $image . '[/img]';
else
$image = '<br /><br /><img height="' . $new_height . '" width="' . $new_width . '" src="' .$image . '" alt="photo" />';
} else {
if($textmode)
$image = $br.$br.'[img]'.$image.'[/img]';
else
$image = '<br /><br /><img src="'.$image.'" alt="photo" />';
}
}
}
}
if(strlen($text)) {
if($textmode)
$text = $br.$br.'[quote]'.trim($text).'[/quote]'.$br ;
else
$text = '<br /><br /><blockquote>'.trim($text).'</blockquote><br />';
}
if($image) {
$text = $image.$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);
echo $result;
killme();
}