329 lines
10 KiB
PHP
329 lines
10 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2020, Friendica
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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use Friendica\Core\Hook;
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use Friendica\Core\Logger;
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use Friendica\Core\Protocol;
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use Friendica\Core\Renderer;
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use Friendica\Core\Session;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Model\Item;
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use Friendica\Protocol\DFRN;
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use Friendica\Protocol\Feed;
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use Friendica\Protocol\OStatus;
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use Friendica\Util\Network;
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use Friendica\Util\ParseUrl;
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use Friendica\Util\Strings;
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require_once __DIR__ . '/../mod/share.php';
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function add_page_info_data(array $data, $no_photos = false)
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{
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Hook::callAll('page_info_data', $data);
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if (empty($data['type'])) {
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return '';
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}
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// It maybe is a rich content, but if it does have everything that a link has,
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// then treat it that way
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if (($data["type"] == "rich") && is_string($data["title"]) &&
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is_string($data["text"]) && !empty($data["images"])) {
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$data["type"] = "link";
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}
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$data["title"] = $data["title"] ?? '';
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if ((($data["type"] != "link") && ($data["type"] != "video") && ($data["type"] != "photo")) || ($data["title"] == $data["url"])) {
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return "";
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}
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if ($no_photos && ($data["type"] == "photo")) {
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return "";
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}
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// Escape some bad characters
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$data["url"] = str_replace(["[", "]"], ["[", "]"], htmlentities($data["url"], ENT_QUOTES, 'UTF-8', false));
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$data["title"] = str_replace(["[", "]"], ["[", "]"], htmlentities($data["title"], ENT_QUOTES, 'UTF-8', false));
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$text = "[attachment type='".$data["type"]."'";
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if (empty($data["text"])) {
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$data["text"] = $data["title"];
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}
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if (empty($data["text"])) {
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$data["text"] = $data["url"];
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}
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if (!empty($data["url"])) {
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$text .= " url='".$data["url"]."'";
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}
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if (!empty($data["title"])) {
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$text .= " title='".$data["title"]."'";
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}
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// Only embedd a picture link when it seems to be a valid picture ("width" is set)
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if (!empty($data["images"]) && !empty($data["images"][0]["width"])) {
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$preview = str_replace(["[", "]"], ["[", "]"], htmlentities($data["images"][0]["src"], ENT_QUOTES, 'UTF-8', false));
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// if the preview picture is larger than 500 pixels then show it in a larger mode
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// But only, if the picture isn't higher than large (To prevent huge posts)
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if (!DI::config()->get('system', 'always_show_preview') && ($data["images"][0]["width"] >= 500)
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&& ($data["images"][0]["width"] >= $data["images"][0]["height"])) {
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$text .= " image='".$preview."'";
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} else {
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$text .= " preview='".$preview."'";
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}
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}
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$text .= "]".$data["text"]."[/attachment]";
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$hashtags = "";
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if (isset($data["keywords"]) && count($data["keywords"])) {
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$hashtags = "\n";
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foreach ($data["keywords"] as $keyword) {
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/// @TODO make a positive list of allowed characters
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$hashtag = str_replace([' ', '+', '/', '.', '#', '@', "'", '"', '’', '`', '(', ')', '„', '“'], '', $keyword);
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$hashtags .= "#[url=" . DI::baseUrl() . "/search?tag=" . $hashtag . "]" . $hashtag . "[/url] ";
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}
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}
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return "\n".$text.$hashtags;
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}
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function query_page_info($url, $photo = "", $keywords = false, $keyword_denylist = "")
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{
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$data = ParseUrl::getSiteinfoCached($url, true);
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if ($photo != "") {
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$data["images"][0]["src"] = $photo;
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}
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Logger::log('fetch page info for ' . $url . ' ' . print_r($data, true), Logger::DEBUG);
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if (!$keywords && isset($data["keywords"])) {
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unset($data["keywords"]);
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}
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if (($keyword_denylist != "") && isset($data["keywords"])) {
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$list = explode(", ", $keyword_denylist);
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foreach ($list as $keyword) {
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$keyword = trim($keyword);
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$index = array_search($keyword, $data["keywords"]);
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if ($index !== false) {
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unset($data["keywords"][$index]);
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}
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}
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}
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return $data;
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}
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function get_page_keywords($url, $photo = "", $keywords = false, $keyword_denylist = "")
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{
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$data = query_page_info($url, $photo, $keywords, $keyword_denylist);
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if (empty($data["keywords"]) || !is_array($data["keywords"])) {
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return [];
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}
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$taglist = [];
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foreach ($data['keywords'] as $keyword) {
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$hashtag = str_replace([" ", "+", "/", ".", "#", "'"],
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["", "", "", "", "", ""], $keyword);
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$taglist[] = $hashtag;
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}
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return $taglist;
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}
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function add_page_info($url, $no_photos = false, $photo = "", $keywords = false, $keyword_denylist = "")
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{
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$data = query_page_info($url, $photo, $keywords, $keyword_denylist);
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$text = '';
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if (is_array($data)) {
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$text = add_page_info_data($data, $no_photos);
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}
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return $text;
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}
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function add_page_info_to_body($body, $texturl = false, $no_photos = false)
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{
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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
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$body = preg_replace("/\[url\=([$URLSearchString]*)\]([#!@])(.*?)\[\/url\]/ism",
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'$2[url=$1]$3[/url]', $body);
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// Adding these spaces is a quick hack due to my problems with regular expressions :)
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preg_match("/[^!#@]\[url\]([$URLSearchString]*)\[\/url\]/ism", " " . $body, $matches);
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if (!$matches) {
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preg_match("/[^!#@]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", " " . $body, $matches);
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}
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// Convert urls without bbcode elements
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if (!$matches && $texturl) {
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preg_match("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", " ".$body, $matches);
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// Yeah, a hack. I really hate regular expressions :)
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if ($matches) {
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$matches[1] = $matches[2];
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}
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}
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if ($matches) {
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$footer = add_page_info($matches[1], $no_photos);
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}
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// Remove the link from the body if the link is attached at the end of the post
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if (isset($footer) && (trim($footer) != "") && (strpos($footer, $matches[1]))) {
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$removedlink = trim(str_replace($matches[1], "", $body));
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if (($removedlink == "") || strstr($body, $removedlink)) {
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$body = $removedlink;
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}
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$removedlink = preg_replace("/\[url\=" . preg_quote($matches[1], '/') . "\](.*?)\[\/url\]/ism", '', $body);
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if (($removedlink == "") || strstr($body, $removedlink)) {
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$body = $removedlink;
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}
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}
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// Add the page information to the bottom
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if (isset($footer) && (trim($footer) != "")) {
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$body .= $footer;
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}
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return $body;
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}
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/**
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*
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* consume_feed - process atom feed and update anything/everything we might need to update
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*
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* $xml = the (atom) feed to consume - RSS isn't as fully supported but may work for simple feeds.
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*
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* $importer = the contact_record (joined to user_record) of the local user who owns this relationship.
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* It is this person's stuff that is going to be updated.
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* $contact = the person who is sending us stuff. If not set, we MAY be processing a "follow" activity
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* from an external network and MAY create an appropriate contact record. Otherwise, we MUST
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* have a contact record.
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* $hub = should we find a hub declation in the feed, pass it back to our calling process, who might (or
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* might not) try and subscribe to it.
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* $datedir sorts in reverse order
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* $pass - by default ($pass = 0) we cannot guarantee that a parent item has been
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* imported prior to its children being seen in the stream unless we are certain
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* of how the feed is arranged/ordered.
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* With $pass = 1, we only pull parent items out of the stream.
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* With $pass = 2, we only pull children (comments/likes).
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*
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* So running this twice, first with pass 1 and then with pass 2 will do the right
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* thing regardless of feed ordering. This won't be adequate in a fully-threaded
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* model where comments can have sub-threads. That would require some massive sorting
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* to get all the feed items into a mostly linear ordering, and might still require
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* recursion.
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*
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* @param $xml
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* @param array $importer
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* @param array $contact
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* @param $hub
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* @throws ImagickException
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
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*/
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function consume_feed($xml, array $importer, array $contact, &$hub)
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{
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if ($contact['network'] === Protocol::OSTATUS) {
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Logger::log("Consume OStatus messages ", Logger::DEBUG);
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OStatus::import($xml, $importer, $contact, $hub);
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return;
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}
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if ($contact['network'] === Protocol::FEED) {
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Logger::log("Consume feeds", Logger::DEBUG);
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Feed::import($xml, $importer, $contact);
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return;
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}
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if ($contact['network'] === Protocol::DFRN) {
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Logger::log("Consume DFRN messages", Logger::DEBUG);
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$dfrn_importer = DFRN::getImporter($contact["id"], $importer["uid"]);
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if (!empty($dfrn_importer)) {
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Logger::log("Now import the DFRN feed");
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DFRN::import($xml, $dfrn_importer, true);
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return;
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}
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}
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}
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function subscribe_to_hub($url, array $importer, array $contact, $hubmode = 'subscribe')
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{
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/*
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* Diaspora has different message-ids in feeds than they do
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* through the direct Diaspora protocol. If we try and use
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* the feed, we'll get duplicates. So don't.
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*/
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if ($contact['network'] === Protocol::DIASPORA) {
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return;
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}
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// Without an importer we don't have a user id - so we quit
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if (empty($importer)) {
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return;
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}
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$user = DBA::selectFirst('user', ['nickname'], ['uid' => $importer['uid']]);
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// No user, no nickname, we quit
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if (!DBA::isResult($user)) {
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return;
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}
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$push_url = DI::baseUrl() . '/pubsub/' . $user['nickname'] . '/' . $contact['id'];
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// Use a single verify token, even if multiple hubs
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$verify_token = ((strlen($contact['hub-verify'])) ? $contact['hub-verify'] : Strings::getRandomHex());
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$params= 'hub.mode=' . $hubmode . '&hub.callback=' . urlencode($push_url) . '&hub.topic=' . urlencode($contact['poll']) . '&hub.verify=async&hub.verify_token=' . $verify_token;
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Logger::log('subscribe_to_hub: ' . $hubmode . ' ' . $contact['name'] . ' to hub ' . $url . ' endpoint: ' . $push_url . ' with verifier ' . $verify_token);
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if (!strlen($contact['hub-verify']) || ($contact['hub-verify'] != $verify_token)) {
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DBA::update('contact', ['hub-verify' => $verify_token], ['id' => $contact['id']]);
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}
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$postResult = Network::post($url, $params);
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Logger::log('subscribe_to_hub: returns: ' . $postResult->getReturnCode(), Logger::DEBUG);
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return;
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}
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