friendica-github/mod/parse_url.php

176 lines
4.6 KiB
PHP
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<?php
/**
* @file mod/parse_url.php
* @brief The parse_url module
*
* This module does parse an url for embedable content (audio, video, image files or link)
* information and does format this information to BBCode or html (this depends
* on the user settings - default is BBCode output).
* If the user has enabled the richtext editor setting the output will be in html
* (Note: This is not always possible and in some case not useful because
* the richtext editor doesn't support all kind of html).
* Otherwise the output will be constructed BBCode.
*
* @see ParseUrl::getSiteinfo() for more information about scraping embeddable content
*/
use \Friendica\ParseUrl;
require_once("include/items.php");
function parse_url_content(&$a) {
$text = null;
$str_tags = "";
$textmode = false;
if (local_user() && (!feature_enabled(local_user(), "richtext"))) {
$textmode = true;
}
$br = (($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"]) {
$arr_tags = ParseUrl::convertTagsToArray($_GET["tags"]);
if (count($arr_tags)) {
$str_tags = $br . implode(" ", $arr_tags) . $br;
}
}
// Add url scheme if it is missing
$arrurl = parse_url($url);
if (!x($arrurl, "scheme")) {
if (x($arrurl, "host")) {
$url = "http:".$url;
} else {
$url = "http://".$url;
}
}
logger("prse_url: " . $url);
// Check if the URL is an image, video or audio file. If so format
// the URL with the corresponding BBCode media tag
$redirects = 0;
// Fetch the header of the URL
$result = z_fetch_url($url, false, $redirects, array("novalidate" => true, "nobody" => true));
if($result["success"]) {
// Convert the header fields into an array
$hdrs = array();
$h = explode("\n", $result["header"]);
foreach ($h as $l) {
list($k,$v) = array_map("trim", explode(":", trim($l), 2));
$hdrs[$k] = $v;
}
if (array_key_exists("Content-Type", $hdrs)) {
$type = $hdrs["Content-Type"];
}
if ($type) {
if(stripos($type, "image/") !== false) {
echo $br . "[img]" . $url . "[/img]" . $br;
killme();
}
if (stripos($type, "video/") !== false) {
echo $br . "[video]" . $url . "[/video]" . $br;
killme();
}
if (stripos($type, "audio/") !== false) {
echo $br . "[audio]" . $url . "[/audio]" . $br;
killme();
}
}
}
if ($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 $arr["text"];
killme();
}
// If there is allready some content information submitted we don't
// need to parse the url for content.
if ($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();
}
// Fetch the information directly from the webpage
$siteinfo = ParseUrl::getSiteinfo($url);
unset($siteinfo["keywords"]);
// Format it as BBCode attachment
$info = add_page_info_data($siteinfo);
if (!$textmode) {
// Replace ' with - not perfect - but the richtext editor has problems otherwise
$info = str_replace(array("&#039;"), array("&#8217;"), $info);
}
echo $info;
killme();
}
/**
* @brief Legacy function to call ParseUrl::getSiteinfoCached
*
* Note: We have moved the function to ParseUrl.php. This function is only for
* legacy support and will be remove in the future
*
* @param type $url The url of the page which should be scraped
* @param type $no_guessing If true the parse doens't search for
* preview pictures
* @param type $do_oembed The false option is used by the function fetch_oembed()
* to avoid endless loops
*
* @return array which contains needed data for embedding
*
* @see ParseUrl::getSiteinfoCached()
*
* @todo Remove this function after all Addons has been changed to use
* ParseUrl::getSiteinfoCached
*/
function parseurl_getsiteinfo_cached($url, $no_guessing = false, $do_oembed = true) {
$siteinfo = ParseUrl::getSiteinfoCached($url, $no_guessing, $do_oembed);
return $siteinfo;
}