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better handling of remote urls - especially FB opengraph

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This commit is contained in:
Friendika 2011-10-28 02:50:00 -07:00
commit e5992003e8
3 changed files with 82 additions and 6 deletions
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72
mod/parse_url.php
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@ -46,6 +46,7 @@ function parse_url_content(&$a) {
killme();
}
if($url && $title && $text) {
$text = '<br /><br /><blockquote>' . $text . '</blockquote><br />';
@ -67,13 +68,26 @@ function parse_url_content(&$a) {
killme();
}
logger('parse_url: data: ' . $s, LOGGER_DATA);
// logger('parse_url: data: ' . $s, LOGGER_DATA);
if(! $s) {
echo sprintf($template,$url,$url,'') . $str_tags;
killme();
}
$matches = '';
$c = preg_match('/\<head(.*?)\>(.*?)\<\/head\>/ism',$s,$matches);
if($c) {
// logger('parse_url: header: ' . $matches[2], LOGGER_DATA);
try {
$domhead = HTML5_Parser::parse($matches[2]);
} catch (DOMException $e) {
logger('scrape_dfrn: parse error: ' . $e);
}
if($domhead)
logger('parsed header');
}
if(! $title) {
if(strpos($s,'<title>')) {
$title = substr($s,strpos($s,'<title>')+7,64);
@ -84,10 +98,11 @@ function parse_url_content(&$a) {
$config = HTMLPurifier_Config::createDefault();
$config->set('Cache.DefinitionImpl', null);
$purifier = new HTMLPurifier($config);
$s = $purifier->purify($s);
// logger('purify_output: ' . $s);
try {
$dom = HTML5_Parser::parse($s);
} catch (DOMException $e) {
@ -157,10 +172,63 @@ function parse_url_content(&$a) {
}
}
if(! $text) {
logger('parsing meta');
$items = $domhead->getElementsByTagName('meta');
if($items) {
foreach($items as $item) {
$property = $item->getAttribute('property');
if($property && (stristr($property,':description'))) {
$text = $item->getAttribute('content');
if(stristr($text,'<script')) {
$text = '';
continue;
}
$text = strip_tags($text);
$text = substr($text,0,250) . '...' ;
}
if($property && (stristr($property,':image'))) {
$image = $item->getAttribute('content');
if(stristr($text,'<script')) {
$image = '';
continue;
}
$image = strip_tags($image);
$i = fetch_url($image);
if($i) {
require_once('include/Photo.php');
$ph = new Photo($i);
if($ph->is_valid()) {
if($ph->getWidth() > 300 || $ph->getHeight() > 300) {
$ph->scaleImage(300);
$new_width = $ph->getWidth();
$new_height = $ph->getHeight();
$image = '<br /><br /><img height="' . $new_height . '" width="' . $new_width . '" src="' .$image . '" alt="photo" />';
}
else
$image = '<br /><br /><img src="' . $image . '" alt="photo" />';
}
else
$image = '';
}
}
}
}
}
if(strlen($text)) {
$text = '<br /><br /><blockquote>' . $text . '</blockquote><br />';
}
if($image) {
$text = $image . '<br />' . $text;
}
$title = str_replace(array("\r","\n"),array('',''),$title);
$result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;