470 lines
14 KiB
PHP
470 lines
14 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, $keyword_blacklist = "")
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{
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$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_blacklist != "") && isset($data["keywords"])) {
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$list = explode(", ", $keyword_blacklist);
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foreach ($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 $data;
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}
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function add_page_keywords($url, $photo = "", $keywords = false, $keyword_blacklist = "")
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{
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$data = query_page_info($url, $photo, $keywords, $keyword_blacklist);
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if (empty($data["keywords"]) || !is_array($data["keywords"])) {
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return '';
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}
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$tags = "";
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foreach ($data["keywords"] as $keyword) {
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$hashtag = str_replace([" ", "+", "/", ".", "#", "'"],
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["", "", "", "", "", ""], $keyword);
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if ($tags != "") {
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$tags .= ", ";
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}
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$tags .= "#[url=" . DI::baseUrl() . "/search?tag=" . $hashtag . "]" . $hashtag . "[/url]";
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}
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return $tags;
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}
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function get_page_keywords($url, $photo = "", $keywords = false, $keyword_blacklist = "")
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{
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$data = query_page_info($url, $photo, $keywords, $keyword_blacklist);
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if (empty($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, $keyword_blacklist = "")
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{
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$data = query_page_info($url, $photo, $keywords, $keyword_blacklist);
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$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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function drop_items(array $items)
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{
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$uid = 0;
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if (!Session::isAuthenticated()) {
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return;
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}
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if (!empty($items)) {
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foreach ($items as $item) {
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$owner = Item::deleteForUser(['id' => $item], local_user());
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if ($owner && !$uid) {
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$uid = $owner;
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}
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}
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}
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}
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function drop_item($id, $return = '')
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{
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$a = DI::app();
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// locate item to be deleted
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$fields = ['id', 'uid', 'guid', 'contact-id', 'deleted', 'gravity', 'parent'];
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$item = Item::selectFirstForUser(local_user(), $fields, ['id' => $id]);
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if (!DBA::isResult($item)) {
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notice(DI::l10n()->t('Item not found.') . EOL);
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DI::baseUrl()->redirect('network');
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}
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if ($item['deleted']) {
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return 0;
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}
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$contact_id = 0;
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// check if logged in user is either the author or owner of this item
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if (Session::getRemoteContactID($item['uid']) == $item['contact-id']) {
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$contact_id = $item['contact-id'];
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}
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if ((local_user() == $item['uid']) || $contact_id) {
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// Check if we should do HTML-based delete confirmation
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if (!empty($_REQUEST['confirm'])) {
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// <form> can't take arguments in its "action" parameter
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// so add any arguments as hidden inputs
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$query = explode_querystring(DI::args()->getQueryString());
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$inputs = [];
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foreach ($query['args'] as $arg) {
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if (strpos($arg, 'confirm=') === false) {
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$arg_parts = explode('=', $arg);
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$inputs[] = ['name' => $arg_parts[0], 'value' => $arg_parts[1]];
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}
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}
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return Renderer::replaceMacros(Renderer::getMarkupTemplate('confirm.tpl'), [
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'$method' => 'get',
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'$message' => DI::l10n()->t('Do you really want to delete this item?'),
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'$extra_inputs' => $inputs,
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'$confirm' => DI::l10n()->t('Yes'),
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'$confirm_url' => $query['base'],
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'$confirm_name' => 'confirmed',
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'$cancel' => DI::l10n()->t('Cancel'),
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]);
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}
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// Now check how the user responded to the confirmation query
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if (!empty($_REQUEST['canceled'])) {
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DI::baseUrl()->redirect('display/' . $item['guid']);
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}
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$is_comment = ($item['gravity'] == GRAVITY_COMMENT) ? true : false;
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$parentitem = null;
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if (!empty($item['parent'])){
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$fields = ['guid'];
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$parentitem = Item::selectFirstForUser(local_user(), $fields, ['id' => $item['parent']]);
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}
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// delete the item
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Item::deleteForUser(['id' => $item['id']], local_user());
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$return_url = hex2bin($return);
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// removes update_* from return_url to ignore Ajax refresh
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$return_url = str_replace("update_", "", $return_url);
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// Check if delete a comment
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if ($is_comment) {
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// Return to parent guid
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if (!empty($parentitem)) {
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DI::baseUrl()->redirect('display/' . $parentitem['guid']);
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//NOTREACHED
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}
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// In case something goes wrong
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else {
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DI::baseUrl()->redirect('network');
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//NOTREACHED
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}
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}
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else {
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// if unknown location or deleting top level post called from display
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if (empty($return_url) || strpos($return_url, 'display') !== false) {
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DI::baseUrl()->redirect('network');
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//NOTREACHED
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} else {
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DI::baseUrl()->redirect($return_url);
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//NOTREACHED
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}
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}
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} else {
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notice(DI::l10n()->t('Permission denied.') . EOL);
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DI::baseUrl()->redirect('display/' . $item['guid']);
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//NOTREACHED
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}
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}
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