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\System;
28 use Friendica\Database\DBA;
30 use Friendica\Model\Contact;
31 use Friendica\Model\Item;
32 use Friendica\Model\Post;
33 use Friendica\Model\User;
34 use Friendica\Module\ActivityPub\Objects;
35 use Friendica\Module\Response;
36 use Friendica\Network\HTTPException;
37 use Friendica\Protocol\ActivityPub;
38 use Friendica\Protocol\DFRN;
39 use Friendica\Protocol\Diaspora;
40 use Friendica\Util\DateTimeFormat;
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') && !DI::userSession()->isAuthenticated()) {
52 $nick = ((DI::args()->getArgc() > 1) ? DI::args()->getArgv()[1] : '');
55 $item_user = DI::userSession()->getLocalUserId();
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?
64 if (DI::userSession()->getLocalUserId()) {
65 $item = Post::selectFirstForUser(DI::userSession()->getLocalUserId(), $fields, ['guid' => DI::args()->getArgv()[1], 'uid' => DI::userSession()->getLocalUserId()]);
66 if (DBA::isResult($item)) {
67 $nick = $a->getLoggedInUserNickname();
71 // Is this item private but could be visible to the remove visitor?
72 if (!DBA::isResult($item) && DI::userSession()->getRemoteUserId) {
73 $item = Post::selectFirst($fields, ['guid' => DI::args()->getArgv()[1], 'private' => Item::PRIVATE, 'origin' => true]);
74 if (DBA::isResult($item)) {
75 if (!Contact::isFollower(DI::userSession()->getRemoteUserId, $item['uid'])) {
78 $item_user = $item['uid'];
83 // Is it an item with uid=0?
84 if (!DBA::isResult($item)) {
85 $item = Post::selectFirstForUser(DI::userSession()->getLocalUserId(), $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(DI::userSession()->getLocalUserId(), $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::debug('Directly serving XML', ['uri-id' => $item['uri-id']]);
105 displayShowFeed($item['uri-id'], $item['uid'], false);
108 if ($item['gravity'] != Item::GRAVITY_PARENT) {
109 $parent = Post::selectFirstForUser($item_user, $fields, ['uid' => [0, $item_user], 'uri-id' => $item['parent-uri-id']], ['order' => ['uid' => true]]);
110 $item = $parent ?: $item;
113 $author = display_fetchauthor($item);
115 if (\Friendica\Util\Network::isLocalLink($author['url'])) {
116 \Friendica\Model\Profile::load(DI::app(), $author['nick'], false);
118 DI::page()['aside'] = Widget\VCard::getHTML($author);
120 $a->setProfileOwner($item['uid']);
123 function display_fetchauthor($item)
125 if (Diaspora::isReshare($item['body'], true)) {
126 $shared = Item::getShareArray($item);
127 if (!empty($shared['profile'])) {
128 $contact = Contact::getByURLForUser($shared['profile'], DI::userSession()->getLocalUserId());
132 if (empty($contact)) {
133 $contact = Contact::getById($item['author-id']);
139 function display_content(App $a, $update = false, $update_uid = 0)
141 if (DI::config()->get('system','block_public') && !DI::userSession()->isAuthenticated()) {
142 throw new HTTPException\ForbiddenException(DI::l10n()->t('Public access denied.'));
149 $force = (bool)($_REQUEST['force'] ?? false);
152 $uri_id = $_REQUEST['uri_id'];
153 $item = Post::selectFirst(['uid', 'parent-uri-id'], ['uri-id' => $uri_id, 'uid' => [0, $update_uid]], ['order' => ['uid' => true]]);
155 if ($item['uid'] != 0) {
156 $a->setProfileOwner($item['uid']);
158 $a->setProfileOwner($update_uid);
160 $parent_uri_id = $item['parent-uri-id'];
162 if (empty($_REQUEST['force'])) {
163 $browser_update = intval(DI::pConfig()->get($update_uid, 'system', 'update_interval'));
164 if (!empty($browser_update)) {
165 $update_date = date(DateTimeFormat::MYSQL, time() - ($browser_update / 500));
166 if (!Post::exists(["`parent-uri-id` = ? AND `uid` IN (?, ?) AND `received` > ?", $parent_uri_id, 0, $update_uid, $update_date])) {
167 Logger::debug('No updated content', ['uri-id' => $uri_id, 'uid' => $update_uid, 'updated' => $update_date]);
170 Logger::debug('Updated content found', ['uri-id' => $uri_id, 'uid' => $update_uid, 'updated' => $update_date]);
174 Logger::debug('Forced content update', ['uri-id' => $uri_id, 'uid' => $update_uid]);
177 $uri_id = ((DI::args()->getArgc() > 2) ? DI::args()->getArgv()[2] : 0);
178 $parent_uri_id = $uri_id;
180 if (DI::args()->getArgc() == 2) {
181 $fields = ['uri-id', 'parent-uri-id', 'uid'];
183 if (DI::userSession()->getLocalUserId()) {
184 $condition = ['guid' => DI::args()->getArgv()[1], 'uid' => [0, DI::userSession()->getLocalUserId()]];
185 $item = Post::selectFirstForUser(DI::userSession()->getLocalUserId(), $fields, $condition, ['order' => ['uid' => true]]);
186 if (DBA::isResult($item)) {
187 $uri_id = $item['uri-id'];
188 $parent_uri_id = $item['parent-uri-id'];
192 if (($parent_uri_id == 0) && DI::userSession()->getRemoteUserId) {
193 $item = Post::selectFirst($fields, ['guid' => DI::args()->getArgv()[1], 'private' => Item::PRIVATE, 'origin' => true]);
194 if (DBA::isResult($item) && Contact::isFollower(DI::userSession()->getRemoteUserId, $item['uid'])) {
195 $uri_id = $item['uri-id'];
196 $parent_uri_id = $item['parent-uri-id'];
200 if ($parent_uri_id == 0) {
201 $condition = ['private' => [Item::PUBLIC, Item::UNLISTED], 'guid' => DI::args()->getArgv()[1], 'uid' => 0];
202 $item = Post::selectFirstForUser(DI::userSession()->getLocalUserId(), $fields, $condition);
203 if (DBA::isResult($item)) {
204 $uri_id = $item['uri-id'];
205 $parent_uri_id = $item['parent-uri-id'];
212 throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
215 if (!DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'system', 'detailed_notif')) {
216 DI::notification()->setAllSeenForUser(DI::userSession()->getLocalUserId(), ['parent-uri-id' => $item['parent-uri-id']]);
217 DI::notify()->setAllSeenForUser(DI::userSession()->getLocalUserId(), ['parent-uri-id' => $item['parent-uri-id']]);
220 // We are displaying an "alternate" link if that post was public. See issue 2864
221 $is_public = Post::exists(['uri-id' => $uri_id, 'private' => [Item::PUBLIC, Item::UNLISTED]]);
223 // For the atom feed the nickname doesn't matter at all, we only need the item id.
224 $alternate = DI::baseUrl().'/display/feed-item/'.$uri_id.'.atom';
225 $conversation = DI::baseUrl().'/display/feed-item/' . $parent_uri_id . '/conversation.atom';
231 DI::page()['htmlhead'] .= Renderer::replaceMacros(Renderer::getMarkupTemplate('display-head.tpl'),
232 ['$alternate' => $alternate,
233 '$conversation' => $conversation]);
235 $is_remote_contact = false;
236 $item_uid = DI::userSession()->getLocalUserId();
240 if (!DI::userSession()->getLocalUserId() && !empty($parent_uri_id)) {
241 $parent = Post::selectFirst(['uid'], ['uri-id' => $parent_uri_id, 'wall' => true]);
244 if (DBA::isResult($parent)) {
245 $page_uid = $page_uid ?? 0 ?: $parent['uid'];
246 $is_remote_contact = DI::userSession()->getRemoteContactID($page_uid);
247 if ($is_remote_contact) {
248 $item_uid = $parent['uid'];
251 $page_uid = $item['uid'];
254 if (!empty($page_uid) && ($page_uid != DI::userSession()->getLocalUserId())) {
255 $page_user = User::getById($page_uid);
258 $is_owner = DI::userSession()->getLocalUserId() && (in_array($page_uid, [DI::userSession()->getLocalUserId(), 0]));
260 if (!empty($page_user['hidewall']) && !$is_owner && !$is_remote_contact) {
261 throw new HTTPException\ForbiddenException(DI::l10n()->t('Access to this profile has been restricted.'));
264 // We need the editor here to be able to reshare an item.
265 if ($is_owner && !$update) {
266 $o .= DI::conversation()->statusEditor([], 0, true);
268 $sql_extra = Item::getPermissionsSQLByUserId($page_uid);
270 if (DI::userSession()->getLocalUserId() && (DI::userSession()->getLocalUserId() == $page_uid)) {
271 $condition = ['parent-uri-id' => $parent_uri_id, 'uid' => DI::userSession()->getLocalUserId(), 'unseen' => true];
272 $unseen = Post::exists($condition);
277 if ($update && !$unseen && !$force) {
281 $condition = ["`uri-id` = ? AND `uid` IN (0, ?) " . $sql_extra, $uri_id, $item_uid];
282 $fields = ['parent-uri-id', 'body', 'title', 'author-name', 'author-avatar', 'plink', 'author-id', 'owner-id', 'contact-id'];
283 $item = Post::selectFirstForUser($page_uid, $fields, $condition);
285 if (!DBA::isResult($item)) {
286 throw new HTTPException\NotFoundException(DI::l10n()->t('The requested item doesn\'t exist or has been deleted.'));
289 $item['uri-id'] = $item['parent-uri-id'];
292 $condition = ['parent-uri-id' => $parent_uri_id, 'uid' => DI::userSession()->getLocalUserId(), 'unseen' => true];
293 Item::update(['unseen' => false], $condition);
296 if (!$update && DI::userSession()->getLocalUserId()) {
297 $o .= "<script> var netargs = '?uri_id=" . $item['uri-id'] . "'; </script>";
300 $o .= DI::conversation()->create([$item], 'display', $update_uid, false, 'commented', $item_uid);
302 // Preparing the meta header
303 $description = trim(BBCode::toPlaintext($item['body']));
304 $title = trim(BBCode::toPlaintext($item['title'] ?? ''));
305 $author_name = $item['author-name'];
307 $image = DI::baseUrl()->remove($item['author-avatar']);
310 $title = $author_name;
313 // Limit the description to 160 characters
314 if (strlen($description) > 160) {
315 $description = substr($description, 0, 157) . '...';
318 $description = htmlspecialchars($description, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
319 $title = htmlspecialchars($title, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
320 $author_name = htmlspecialchars($author_name, ENT_COMPAT, 'UTF-8', true); // allow double encoding here
324 if (DBA::exists('contact', ['unsearchable' => true, 'id' => [$item['contact-id'], $item['author-id'], $item['owner-id']]])) {
325 $page['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
328 DI::page()['htmlhead'] .= '<meta name="author" content="'.$author_name.'" />'."\n";
329 $page['htmlhead'] .= '<meta name="title" content="'.$title.'" />'."\n";
330 $page['htmlhead'] .= '<meta name="fulltitle" content="'.$title.'" />'."\n";
331 $page['htmlhead'] .= '<meta name="description" content="'.$description.'" />'."\n";
333 // Schema.org microdata
334 $page['htmlhead'] .= '<meta itemprop="name" content="'.$title.'" />'."\n";
335 $page['htmlhead'] .= '<meta itemprop="description" content="'.$description.'" />'."\n";
336 $page['htmlhead'] .= '<meta itemprop="image" content="'.$image.'" />'."\n";
337 $page['htmlhead'] .= '<meta itemprop="author" content="'.$author_name.'" />'."\n";
340 $page['htmlhead'] .= '<meta name="twitter:card" content="summary" />'."\n";
341 $page['htmlhead'] .= '<meta name="twitter:title" content="'.$title.'" />'."\n";
342 $page['htmlhead'] .= '<meta name="twitter:description" content="'.$description.'" />'."\n";
343 $page['htmlhead'] .= '<meta name="twitter:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
344 $page['htmlhead'] .= '<meta name="twitter:url" content="'.$item["plink"].'" />'."\n";
347 $page['htmlhead'] .= '<meta name="DC.title" content="'.$title.'" />'."\n";
348 $page['htmlhead'] .= '<meta name="DC.description" content="'.$description.'" />'."\n";
351 $page['htmlhead'] .= '<meta property="og:type" content="website" />'."\n";
352 $page['htmlhead'] .= '<meta property="og:title" content="'.$title.'" />'."\n";
353 $page['htmlhead'] .= '<meta property="og:image" content="'.DI::baseUrl().'/'.$image.'" />'."\n";
354 $page['htmlhead'] .= '<meta property="og:url" content="'.$item["plink"].'" />'."\n";
355 $page['htmlhead'] .= '<meta property="og:description" content="'.$description.'" />'."\n";
356 $page['htmlhead'] .= '<meta name="og:article:author" content="'.$author_name.'" />'."\n";
362 function displayShowFeed(int $uri_id, int $uid, bool $conversation)
364 $xml = DFRN::itemFeed($uri_id, $uid, $conversation);
366 throw new HTTPException\InternalServerErrorException(DI::l10n()->t('The feed for this item is unavailable.'));
369 System::httpExit($xml, Response::TYPE_ATOM);