380 lines
13 KiB
PHP
380 lines
13 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2010-2021, the Friendica project
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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\App;
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use Friendica\Content\Text\BBCode;
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use Friendica\Content\Widget;
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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\Contact;
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use Friendica\Model\Item;
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use Friendica\Model\Post;
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use Friendica\Model\User;
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use Friendica\Module\ActivityPub\Objects;
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use Friendica\Network\HTTPException;
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use Friendica\Protocol\ActivityPub;
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use Friendica\Protocol\DFRN;
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function display_init(App $a)
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{
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if (ActivityPub::isRequest()) {
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(new Objects(DI::l10n(), ['guid' => DI::args()->getArgv()[1] ?? null]))->rawContent();
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}
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if (DI::config()->get('system', 'block_public') && !Session::isAuthenticated()) {
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return;
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}
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$nick = ((DI::args()->getArgc() > 1) ? DI::args()->getArgv()[1] : '');
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$item = null;
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$item_user = local_user();
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$fields = ['uri-id', 'parent-uri-id', 'author-id', 'author-link', 'body', 'uid', 'guid', 'gravity'];
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// If there is only one parameter, then check if this parameter could be a guid
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if (DI::args()->getArgc() == 2) {
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$nick = '';
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// Does the local user have this item?
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if (local_user()) {
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$item = Post::selectFirstForUser(local_user(), $fields, ['guid' => DI::args()->getArgv()[1], 'uid' => local_user()]);
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if (DBA::isResult($item)) {
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$nick = $a->getLoggedInUserNickname();
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}
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}
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// Is this item private but could be visible to the remove visitor?
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if (!DBA::isResult($item) && remote_user()) {
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$item = Post::selectFirst($fields, ['guid' => DI::args()->getArgv()[1], 'private' => Item::PRIVATE, 'origin' => true]);
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if (DBA::isResult($item)) {
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if (!Contact::isFollower(remote_user(), $item['uid'])) {
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$item = null;
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} else {
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$item_user = $item['uid'];
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}
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}
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}
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// Is it an item with uid=0?
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if (!DBA::isResult($item)) {
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$item = Post::selectFirstForUser(local_user(), $fields, ['guid' => DI::args()->getArgv()[1], 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]);
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}
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} elseif (DI::args()->getArgc() >= 3 && $nick == 'feed-item') {
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$uri_id = DI::args()->getArgv()[2];
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if (substr($uri_id, -5) == '.atom') {
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$uri_id = substr($uri_id, 0, -5);
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}
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$item = Post::selectFirstForUser(local_user(), $fields, ['uri-id' => $uri_id, 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]);
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}
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if (!DBA::isResult($item)) {
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return;
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}
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if (DI::args()->getArgc() >= 3 && $nick == 'feed-item') {
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displayShowFeed($item['uri-id'], $item['uid'], DI::args()->getArgc() > 3 && DI::args()->getArgv()[3] == 'conversation.atom');
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}
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if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
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Logger::info('Directly serving XML for uri-id '.$item['uri-id']);
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displayShowFeed($item['uri-id'], $item['uid'], false);
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}
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if ($item['gravity'] != GRAVITY_PARENT) {
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$parent = Post::selectFirstForUser($item_user, $fields, ['uid' => $item['uid'], 'uri-id' => $item['parent-uri-id']]);
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$item = $parent ?: $item;
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}
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$profiledata = display_fetchauthor($item);
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DI::page()['aside'] = Widget\VCard::getHTML($profiledata);
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}
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function display_fetchauthor($item)
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{
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$profiledata = Contact::getByURLForUser($item['author-link'], local_user());
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// Check for a repeated message
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$shared = Item::getShareArray($item);
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if (!empty($shared) && empty($shared['comment'])) {
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$profiledata = [
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'uid' => -1,
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'id' => -1,
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'nickname' => '',
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'name' => '',
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'picdate' => '',
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'photo' => '',
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'url' => '',
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'network' => '',
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];
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if (!empty($shared['author'])) {
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$profiledata['name'] = $shared['author'];
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}
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if (!empty($shared['profile'])) {
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$profiledata['url'] = $shared['profile'];
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}
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if (!empty($shared['avatar'])) {
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$profiledata['photo'] = $shared['avatar'];
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}
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$profiledata['nickname'] = $profiledata['name'];
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$profiledata['network'] = Protocol::matchByProfileUrl($profiledata['url']);
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$profiledata['address'] = '';
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$profiledata['about'] = '';
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$profiledata = Contact::getByURLForUser($profiledata['url'], local_user()) ?: $profiledata;
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}
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if (!empty($profiledata['photo'])) {
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$profiledata['photo'] = DI::baseUrl()->remove($profiledata['photo']);
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}
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return $profiledata;
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}
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function display_content(App $a, $update = false, $update_uid = 0)
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{
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if (DI::config()->get('system','block_public') && !Session::isAuthenticated()) {
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throw new HTTPException\ForbiddenException(DI::l10n()->t('Public access denied.'));
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}
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$o = '';
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$item = null;
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$force = (bool)($_REQUEST['force'] ?? false);
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if ($update) {
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$uri_id = $_REQUEST['uri_id'];
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$item = Post::selectFirst(['uid', 'parent-uri-id'], ['uri-id' => $uri_id, 'uid' => [0, $update_uid]], ['order' => ['uid' => true]]);
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if (!empty($item)) {
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if ($item['uid'] != 0) {
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$a->setProfileOwner($item['uid']);
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} else {
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$a->setProfileOwner($update_uid);
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}
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$parent_uri_id = $item['parent-uri-id'];
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}
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} else {
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$uri_id = ((DI::args()->getArgc() > 2) ? DI::args()->getArgv()[2] : 0);
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$parent_uri_id = $uri_id;
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if (DI::args()->getArgc() == 2) {
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$fields = ['uri-id', 'parent-uri-id', 'uid'];
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if (local_user()) {
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$condition = ['guid' => DI::args()->getArgv()[1], 'uid' => [0, local_user()]];
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$item = Post::selectFirstForUser(local_user(), $fields, $condition, ['order' => ['uid' => true]]);
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if (DBA::isResult($item)) {
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$uri_id = $item['uri-id'];
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$parent_uri_id = $item['parent-uri-id'];
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}
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}
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if (($parent_uri_id == 0) && remote_user()) {
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$item = Post::selectFirst($fields, ['guid' => DI::args()->getArgv()[1], 'private' => Item::PRIVATE, 'origin' => true]);
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if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
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$uri_id = $item['uri-id'];
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$parent_uri_id = $item['parent-uri-id'];
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}
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}
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if ($parent_uri_id == 0) {
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$condition = ['private' => [Item::PUBLIC, Item::UNLISTED], 'guid' => DI::args()->getArgv()[1], 'uid' => 0];
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$item = Post::selectFirstForUser(local_user(), $fields, $condition);
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if (DBA::isResult($item)) {
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$uri_id = $item['uri-id'];
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$parent_uri_id = $item['parent-uri-id'];
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}
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}
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}
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}
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if (empty($item)) {
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throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
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}
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if (!DI::pConfig()->get(local_user(), 'system', 'detailed_notif')) {
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DI::notification()->setAllSeenForUser(local_user(), ['parent-uri-id' => $item['parent-uri-id']]);
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DI::notify()->setAllSeenForUser(local_user(), ['parent-uri-id' => $item['parent-uri-id']]);
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}
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// We are displaying an "alternate" link if that post was public. See issue 2864
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$is_public = Post::exists(['uri-id' => $uri_id, 'private' => [Item::PUBLIC, Item::UNLISTED]]);
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if ($is_public) {
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// For the atom feed the nickname doesn't matter at all, we only need the item id.
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$alternate = DI::baseUrl().'/display/feed-item/'.$uri_id.'.atom';
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$conversation = DI::baseUrl().'/display/feed-item/' . $parent_uri_id . '/conversation.atom';
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} else {
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$alternate = '';
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$conversation = '';
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}
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DI::page()['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
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['$alternate' => $alternate,
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'$conversation' => $conversation]);
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$is_remote_contact = false;
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$item_uid = local_user();
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$page_uid = 0;
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$parent = null;
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if (!local_user() && !empty($parent_uri_id)) {
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$parent = Post::selectFirst(['uid'], ['uri-id' => $parent_uri_id, 'wall' => true]);
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}
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if (DBA::isResult($parent)) {
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$page_uid = $page_uid ?? 0 ?: $parent['uid'];
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$is_remote_contact = Session::getRemoteContactID($page_uid);
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if ($is_remote_contact) {
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$item_uid = $parent['uid'];
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}
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} else {
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$page_uid = $item['uid'];
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}
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if (!empty($page_uid) && ($page_uid != local_user())) {
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$page_user = User::getById($page_uid);
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}
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$is_owner = local_user() && (in_array($page_uid, [local_user(), 0]));
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if (!empty($page_user['hidewall']) && !$is_owner && !$is_remote_contact) {
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throw new HTTPException\ForbiddenException(DI::l10n()->t('Access to this profile has been restricted.'));
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}
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// We need the editor here to be able to reshare an item.
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if ($is_owner && !$update) {
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$o .= DI::conversation()->statusEditor([], 0, true);
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}
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$sql_extra = Item::getPermissionsSQLByUserId($page_uid);
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if (local_user() && (local_user() == $page_uid)) {
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$condition = ['parent-uri-id' => $parent_uri_id, 'uid' => local_user(), 'unseen' => true];
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$unseen = Post::exists($condition);
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} else {
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$unseen = false;
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}
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if ($update && !$unseen && !$force) {
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return '';
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}
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$condition = ["`uri-id` = ? AND `uid` IN (0, ?) " . $sql_extra, $uri_id, $item_uid];
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$fields = ['parent-uri-id', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id'];
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$item = Post::selectFirstForUser($page_uid, $fields, $condition);
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if (!DBA::isResult($item)) {
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throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
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}
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$item['uri-id'] = $item['parent-uri-id'];
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if ($unseen) {
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$condition = ['parent-uri-id' => $parent_uri_id, 'uid' => local_user(), 'unseen' => true];
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Item::update(['unseen' => false], $condition);
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}
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if (!$update && local_user()) {
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$o .= "<script> var netargs = '?uri_id=" . $item['uri-id'] . "'; </script>";
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}
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$o .= DI::conversation()->create([$item], 'display', $update_uid, false, 'commented', $item_uid);
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// Preparing the meta header
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$description = trim(BBCode::toPlaintext($item['body']));
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$title = trim(BBCode::toPlaintext($item['title']));
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$author_name = $item['author-name'];
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$image = DI::baseUrl()->remove($item['author-avatar']);
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if ($title == '') {
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$title = $author_name;
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}
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// Limit the description to 160 characters
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if (strlen($description) > 160) {
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$description = substr($description, 0, 157) . '...';
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}
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$description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
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$title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
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$author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
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$page = DI::page();
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if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) {
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$page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
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}
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DI::page()['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
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$page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
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// Schema.org microdata
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$page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
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$page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
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$page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
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// Twitter cards
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$page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
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$page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
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$page['htmlhead'] .= '<meta name="twitter:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
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$page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
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// Dublin Core
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$page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
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// Open Graph
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$page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
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$page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
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$page['htmlhead'] .= '<meta property="og:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
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$page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
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$page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
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$page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
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// article:tag
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return $o;
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}
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function displayShowFeed(int $uri_id, int $uid, bool $conversation)
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{
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$xml = DFRN::itemFeed($uri_id, $uid, $conversation);
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if ($xml == '') {
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throw new HTTPException\InternalServerErrorException(DI::l10n()->t('The feed for this item is unavailable.'));
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}
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header("Content-type: application/atom+xml");
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echo $xml;
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exit();
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}
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