friendica/include/items.php

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<?php
/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
use Friendica\Core\Hook;
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use Friendica\Core\Logger;
use Friendica\Core\Protocol;
use Friendica\Core\Renderer;
use Friendica\Core\Session;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Model\Item;
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use Friendica\Protocol\DFRN;
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use Friendica\Protocol\Feed;
use Friendica\Protocol\OStatus;
use Friendica\Util\Network;
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use Friendica\Util\ParseUrl;
use Friendica\Util\Strings;
require_once __DIR__ . '/../mod/share.php';
function add_page_info_data(array $data, $no_photos = false)
{
Hook::callAll('page_info_data', $data);
if (empty($data['type'])) {
return '';
}
// It maybe is a rich content, but if it does have everything that a link has,
// then treat it that way
if (($data["type"] == "rich") && is_string($data["title"]) &&
is_string($data["text"]) && !empty($data["images"])) {
$data["type"] = "link";
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}
$data["title"] = $data["title"] ?? '';
if ((($data["type"] != "link") && ($data["type"] != "video") && ($data["type"] != "photo")) || ($data["title"] == $data["url"])) {
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return "";
}
if ($no_photos && ($data["type"] == "photo")) {
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return "";
}
// Escape some bad characters
$data["url"] = str_replace(["[", "]"], ["&#91;", "&#93;"], htmlentities($data["url"], ENT_QUOTES, 'UTF-8', false));
$data["title"] = str_replace(["[", "]"], ["&#91;", "&#93;"], htmlentities($data["title"], ENT_QUOTES, 'UTF-8', false));
$text = "[attachment type='".$data["type"]."'";
if (empty($data["text"])) {
$data["text"] = $data["title"];
}
if (empty($data["text"])) {
$data["text"] = $data["url"];
}
if (!empty($data["url"])) {
$text .= " url='".$data["url"]."'";
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}
if (!empty($data["title"])) {
$text .= " title='".$data["title"]."'";
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}
// Only embedd a picture link when it seems to be a valid picture ("width" is set)
if (!empty($data["images"]) && !empty($data["images"][0]["width"])) {
$preview = str_replace(["[", "]"], ["&#91;", "&#93;"], htmlentities($data["images"][0]["src"], ENT_QUOTES, 'UTF-8', false));
// if the preview picture is larger than 500 pixels then show it in a larger mode
// But only, if the picture isn't higher than large (To prevent huge posts)
if (!DI::config()->get('system', 'always_show_preview') && ($data["images"][0]["width"] >= 500)
&& ($data["images"][0]["width"] >= $data["images"][0]["height"])) {
$text .= " image='".$preview."'";
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} else {
$text .= " preview='".$preview."'";
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}
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}
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$text .= "]".$data["text"]."[/attachment]";
$hashtags = "";
if (isset($data["keywords"]) && count($data["keywords"])) {
$hashtags = "\n";
foreach ($data["keywords"] as $keyword) {
/// @TODO make a positive list of allowed characters
$hashtag = str_replace([' ', '+', '/', '.', '#', '@', "'", '"', '', '`', '(', ')', '„', '“'], '', $keyword);
$hashtags .= "#[url=" . DI::baseUrl() . "/search?tag=" . $hashtag . "]" . $hashtag . "[/url] ";
}
}
return "\n".$text.$hashtags;
}
function query_page_info($url, $photo = "", $keywords = false, $keyword_denylist = "")
{
$data = ParseUrl::getSiteinfoCached($url, true);
if ($photo != "") {
$data["images"][0]["src"] = $photo;
}
Logger::log('fetch page info for ' . $url . ' ' . print_r($data, true), Logger::DEBUG);
if (!$keywords && isset($data["keywords"])) {
unset($data["keywords"]);
}
if (($keyword_denylist != "") && isset($data["keywords"])) {
$list = explode(", ", $keyword_denylist);
foreach ($list as $keyword) {
$keyword = trim($keyword);
$index = array_search($keyword, $data["keywords"]);
if ($index !== false) {
unset($data["keywords"][$index]);
}
}
}
return $data;
}
function get_page_keywords($url, $photo = "", $keywords = false, $keyword_denylist = "")
{
$data = query_page_info($url, $photo, $keywords, $keyword_denylist);
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if (empty($data["keywords"]) || !is_array($data["keywords"])) {
return [];
}
$taglist = [];
foreach ($data['keywords'] as $keyword) {
$hashtag = str_replace([" ", "+", "/", ".", "#", "'"],
["", "", "", "", "", ""], $keyword);
$taglist[] = $hashtag;
}
return $taglist;
}
function add_page_info($url, $no_photos = false, $photo = "", $keywords = false, $keyword_denylist = "")
{
$data = query_page_info($url, $photo, $keywords, $keyword_denylist);
$text = '';
if (is_array($data)) {
$text = add_page_info_data($data, $no_photos);
}
return $text;
}
function add_page_info_to_body($body, $texturl = false, $no_photos = false)
{
Logger::log('add_page_info_to_body: fetch page info for body ' . $body, Logger::DEBUG);
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$URLSearchString = "^\[\]";
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// Fix for Mastodon where the mentions are in a different format
$body = preg_replace("/\[url\=([$URLSearchString]*)\]([#!@])(.*?)\[\/url\]/ism",
'$2[url=$1]$3[/url]', $body);
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// Adding these spaces is a quick hack due to my problems with regular expressions :)
preg_match("/[^!#@]\[url\]([$URLSearchString]*)\[\/url\]/ism", " " . $body, $matches);
if (!$matches) {
preg_match("/[^!#@]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", " " . $body, $matches);
}
// Convert urls without bbcode elements
if (!$matches && $texturl) {
preg_match("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", " ".$body, $matches);
// Yeah, a hack. I really hate regular expressions :)
if ($matches) {
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$matches[1] = $matches[2];
}
}
if ($matches) {
$footer = add_page_info($matches[1], $no_photos);
}
// Remove the link from the body if the link is attached at the end of the post
if (isset($footer) && (trim($footer) != "") && (strpos($footer, $matches[1]))) {
$removedlink = trim(str_replace($matches[1], "", $body));
if (($removedlink == "") || strstr($body, $removedlink)) {
$body = $removedlink;
}
$removedlink = preg_replace("/\[url\=" . preg_quote($matches[1], '/') . "\](.*?)\[\/url\]/ism", '', $body);
if (($removedlink == "") || strstr($body, $removedlink)) {
$body = $removedlink;
}
}
// Add the page information to the bottom
if (isset($footer) && (trim($footer) != "")) {
$body .= $footer;
}
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return $body;
}
/**
* @deprecated since 2020.06
* @see \Friendica\Protocol\Feed::consume
*/
function consume_feed($xml, array $importer, array $contact, &$hub)
{
\Friendica\Protocol\Feed::consume($xml, $importer, $contact, $hub);
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}