3 * @copyright Copyright (C) 2010-2022, the Friendica project
5 * @license GNU AGPL version 3 or any later version
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU Affero General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU Affero General Public License for more details.
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
23 use Friendica\Content\Text\BBCode;
24 use Friendica\Content\Widget;
25 use Friendica\Core\Logger;
26 use Friendica\Core\Renderer;
27 use Friendica\Core\Session;
28 use Friendica\Core\System;
29 use Friendica\Database\DBA;
31 use Friendica\Model\Contact;
32 use Friendica\Model\Item;
33 use Friendica\Model\Post;
34 use Friendica\Model\User;
35 use Friendica\Module\ActivityPub\Objects;
36 use Friendica\Module\Response;
37 use Friendica\Network\HTTPException;
38 use Friendica\Protocol\ActivityPub;
39 use Friendica\Protocol\DFRN;
40 use Friendica\Protocol\Diaspora;
42 function display_init(App $a)
44 if (ActivityPub::isRequest()) {
45 (new Objects(DI::l10n(), DI::baseUrl(), DI::args(), DI::logger(), DI::profiler(), DI::apiResponse(), $_SERVER, ['guid' => DI::args()->getArgv()[1] ?? null]))->run();
48 if (DI::config()->get('system', 'block_public') && !Session::isAuthenticated()) {
52 $nick = ((DI::args()->getArgc() > 1) ? DI::args()->getArgv()[1] : '');
55 $item_user = local_user();
57 $fields = ['uri-id', 'parent-uri-id', 'author-id', 'author-link', 'body', 'uid', 'guid', 'gravity'];
59 // If there is only one parameter, then check if this parameter could be a guid
60 if (DI::args()->getArgc() == 2) {
63 // Does the local user have this item?
65 $item = Post::selectFirstForUser(local_user(), $fields, ['guid' => DI::args()->getArgv()[1], 'uid' => local_user()]);
66 if (DBA::isResult($item)) {
67 $nick = $a->getLoggedInUserNickname();
71 // Is this item private but could be visible to the remove visitor?
72 if (!DBA::isResult($item) && remote_user()) {
73 $item = Post::selectFirst($fields, ['guid' => DI::args()->getArgv()[1], 'private' => Item::PRIVATE, 'origin' => true]);
74 if (DBA::isResult($item)) {
75 if (!Contact::isFollower(remote_user(), $item['uid'])) {
78 $item_user = $item['uid'];
83 // Is it an item with uid=0?
84 if (!DBA::isResult($item)) {
85 $item = Post::selectFirstForUser(local_user(), $fields, ['guid' => DI::args()->getArgv()[1], 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]);
87 } elseif (DI::args()->getArgc() >= 3 && $nick == 'feed-item') {
88 $uri_id = DI::args()->getArgv()[2];
89 if (substr($uri_id, -5) == '.atom') {
90 $uri_id = substr($uri_id, 0, -5);
92 $item = Post::selectFirstForUser(local_user(), $fields, ['uri-id' => $uri_id, 'private' => [Item::PUBLIC, Item::UNLISTED], 'uid' => 0]);
95 if (!DBA::isResult($item)) {
99 if (DI::args()->getArgc() >= 3 && $nick == 'feed-item') {
100 displayShowFeed($item['uri-id'], $item['uid'], DI::args()->getArgc() > 3 && DI::args()->getArgv()[3] == 'conversation.atom');
103 if (!empty($_SERVER['HTTP_ACCEPT']) && strstr($_SERVER['HTTP_ACCEPT'], 'application/atom+xml')) {
104 Logger::info('Directly serving XML for uri-id '.$item['uri-id']);
105 displayShowFeed($item['uri-id'], $item['uid'], false);
108 if ($item['gravity'] != GRAVITY_PARENT) {
109 $parent = Post::selectFirstForUser($item_user, $fields, ['uid' => $item['uid'], 'uri-id' => $item['parent-uri-id']]);
110 $item = $parent ?: $item;
113 DI::page()['aside'] = Widget\VCard::getHTML(display_fetchauthor($item));
116 function display_fetchauthor($item)
118 if (Diaspora::isReshare($item['body'], true)) {
119 $shared = Item::getShareArray($item);
120 if (!empty($shared['profile'])) {
121 $contact = Contact::getByURLForUser($shared['profile'], local_user());
125 if (empty($contact)) {
126 $contact = Contact::getById($item['author-id']);
132 function display_content(App $a, $update = false, $update_uid = 0)
134 if (DI::config()->get('system','block_public') && !Session::isAuthenticated()) {
135 throw new HTTPException\ForbiddenException(DI::l10n()->t('Public access denied.'));
142 $force = (bool)($_REQUEST['force'] ?? false);
145 $uri_id = $_REQUEST['uri_id'];
146 $item = Post::selectFirst(['uid', 'parent-uri-id'], ['uri-id' => $uri_id, 'uid' => [0, $update_uid]], ['order' => ['uid' => true]]);
148 if ($item['uid'] != 0) {
149 $a->setProfileOwner($item['uid']);
151 $a->setProfileOwner($update_uid);
153 $parent_uri_id = $item['parent-uri-id'];
156 $uri_id = ((DI::args()->getArgc() > 2) ? DI::args()->getArgv()[2] : 0);
157 $parent_uri_id = $uri_id;
159 if (DI::args()->getArgc() == 2) {
160 $fields = ['uri-id', 'parent-uri-id', 'uid'];
163 $condition = ['guid' => DI::args()->getArgv()[1], 'uid' => [0, local_user()]];
164 $item = Post::selectFirstForUser(local_user(), $fields, $condition, ['order' => ['uid' => true]]);
165 if (DBA::isResult($item)) {
166 $uri_id = $item['uri-id'];
167 $parent_uri_id = $item['parent-uri-id'];
171 if (($parent_uri_id == 0) && remote_user()) {
172 $item = Post::selectFirst($fields, ['guid' => DI::args()->getArgv()[1], 'private' => Item::PRIVATE, 'origin' => true]);
173 if (DBA::isResult($item) && Contact::isFollower(remote_user(), $item['uid'])) {
174 $uri_id = $item['uri-id'];
175 $parent_uri_id = $item['parent-uri-id'];
179 if ($parent_uri_id == 0) {
180 $condition = ['private' => [Item::PUBLIC, Item::UNLISTED], 'guid' => DI::args()->getArgv()[1], 'uid' => 0];
181 $item = Post::selectFirstForUser(local_user(), $fields, $condition);
182 if (DBA::isResult($item)) {
183 $uri_id = $item['uri-id'];
184 $parent_uri_id = $item['parent-uri-id'];
191 throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
194 if (!DI::pConfig()->get(local_user(), 'system', 'detailed_notif')) {
195 DI::notification()->setAllSeenForUser(local_user(), ['parent-uri-id' => $item['parent-uri-id']]);
196 DI::notify()->setAllSeenForUser(local_user(), ['parent-uri-id' => $item['parent-uri-id']]);
199 // We are displaying an "alternate" link if that post was public. See issue 2864
200 $is_public = Post::exists(['uri-id' => $uri_id, 'private' => [Item::PUBLIC, Item::UNLISTED]]);
202 // For the atom feed the nickname doesn't matter at all, we only need the item id.
203 $alternate = DI::baseUrl().'/display/feed-item/'.$uri_id.'.atom';
204 $conversation = DI::baseUrl().'/display/feed-item/' . $parent_uri_id . '/conversation.atom';
210 DI::page()['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
211 ['$alternate' => $alternate,
212 '$conversation' => $conversation]);
214 $is_remote_contact = false;
215 $item_uid = local_user();
219 if (!local_user() && !empty($parent_uri_id)) {
220 $parent = Post::selectFirst(['uid'], ['uri-id' => $parent_uri_id, 'wall' => true]);
223 if (DBA::isResult($parent)) {
224 $page_uid = $page_uid ?? 0 ?: $parent['uid'];
225 $is_remote_contact = Session::getRemoteContactID($page_uid);
226 if ($is_remote_contact) {
227 $item_uid = $parent['uid'];
230 $page_uid = $item['uid'];
233 if (!empty($page_uid) && ($page_uid != local_user())) {
234 $page_user = User::getById($page_uid);
237 $is_owner = local_user() && (in_array($page_uid, [local_user(), 0]));
239 if (!empty($page_user['hidewall']) && !$is_owner && !$is_remote_contact) {
240 throw new HTTPException\ForbiddenException(DI::l10n()->t('Access to this profile has been restricted.'));
243 // We need the editor here to be able to reshare an item.
244 if ($is_owner && !$update) {
245 $o .= DI::conversation()->statusEditor([], 0, true);
247 $sql_extra = Item::getPermissionsSQLByUserId($page_uid);
249 if (local_user() && (local_user() == $page_uid)) {
250 $condition = ['parent-uri-id' => $parent_uri_id, 'uid' => local_user(), 'unseen' => true];
251 $unseen = Post::exists($condition);
256 if ($update && !$unseen && !$force) {
260 $condition = ["`uri-id` = ? AND `uid` IN (0, ?) " . $sql_extra, $uri_id, $item_uid];
261 $fields = ['parent-uri-id', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id'];
262 $item = Post::selectFirstForUser($page_uid, $fields, $condition);
264 if (!DBA::isResult($item)) {
265 throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
268 $item['uri-id'] = $item['parent-uri-id'];
271 $condition = ['parent-uri-id' => $parent_uri_id, 'uid' => local_user(), 'unseen' => true];
272 Item::update(['unseen' => false], $condition);
275 if (!$update && local_user()) {
276 $o .= "<script> var netargs = '?uri_id=" . $item['uri-id'] . "'; </script>";
279 $o .= DI::conversation()->create([$item], 'display', $update_uid, false, 'commented', $item_uid);
281 // Preparing the meta header
282 $description = trim(BBCode::toPlaintext($item['body']));
283 $title = trim(BBCode::toPlaintext($item['title']));
284 $author_name = $item['author-name'];
286 $image = DI::baseUrl()->remove($item['author-avatar']);
289 $title = $author_name;
292 // Limit the description to 160 characters
293 if (strlen($description) > 160) {
294 $description = substr($description, 0, 157) . '...';
297 $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
298 $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
299 $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
303 if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) {
304 $page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
307 DI::page()['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
308 $page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
309 $page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
310 $page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
312 // Schema.org microdata
313 $page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
314 $page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
315 $page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
316 $page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
319 $page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
320 $page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
321 $page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
322 $page['htmlhead'] .= '<meta name="twitter:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
323 $page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
326 $page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
327 $page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
330 $page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
331 $page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
332 $page['htmlhead'] .= '<meta property="og:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
333 $page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
334 $page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
335 $page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
341 function displayShowFeed(int $uri_id, int $uid, bool $conversation)
343 $xml = DFRN::itemFeed($uri_id, $uid, $conversation);
345 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('The feed for this item is unavailable.'));
348 System::httpExit($xml, Response::TYPE_ATOM);